Silpak Catalog

“Just the Right Chemistry”
www.silpak.com
Quality * Experience * Selection * Service
We have two locations to serve you:
470 East Bonita Ave
Pomona, CA 91767
909-625-0056
10611 Burbank Blvd
North Hollywood, CA 91601
818-985-8850
SILPAK, INC.
TABLE OF CONTENTS
What’s New????????.........................................2
MOLD MAKING 101
One-Piece Block Mold…………………………………………….3
Two-Piece Block Mold…………………………………………….4
SILICONE RTV RUBBER Condensation/Tin
High Strength R-1300 Series Silicone………………………6
Translucent Skin Series …….…………………………………...7
Rubber Glass R-1120.……………………………………………..8
SILICONE RTV RUBBER Addition/Platinum
Silpak, Inc. is an industrial manufacturer and
supplier of liquid mold rubbers, casting resin
systems and other specialty materials
developed specifically for the mold making and
casting industry. From flexible rubber molding
compounds—Latex, Urethane and Silicone
RTVs to durable casting resins—Epoxy,
Polyester, and Polyurethane, Silpak is an
industry leader and innovator since 1984.
Each of our polymer rubber and plastic systems
are designed with a broad array of performance
properties (i.e. hardness, elongation, tensile) to
meet nearly any project’s requirements. We
also carry a large inventory and offer quickturn-around shipping to meet your production
schedule.
So, if you have an application for our materials
or require expert assistance in product
selection, we invite you to contact Silpak’s
helpful and knowledgeable Technical Support
Team.
SILICONE SILPUTTY SERIES Platinum
Silputty RTV Series………………………………………………..12
Lifecasting & Appliance RTV……….………….……………..12
URETHANE RTV RUBBER
Urethane RTV Rubbers 20-65 Shore A.…………………13
Urethane RTV Rubbers 70-95 Shore A …..…………….14
LATEX RUBBER
Mold Making, Dip & Slush Cast, Spray……..…………..15
URETHANE PLASTIC & FOAM
Fast Cast General Purpose..………………………………….16
Performance & Specialty Urethanes……………………..17
Rigid Foam SP-328 Series……………………………………..18
Flexible Foam Series…………………………………………....19
EPOXY RESIN
Aluminum Filled, Adhesive, Clear Coating & Casting,
Laminating, Surface Coat………….………………………….20
POLYESTER RESIN
Casting, Laminating, Gelcoat, Clear Coat ………….….21
CONTACT INFORMATION
PLASTER…………………………………………………………….22
CLAY………………………………………………..………………….23
Email: silpak@aol.com
• Pomona (Office/Store)
470 E. Bonita Ave
Pomona, CA 91767
7:00—4:30pm Mon-Fri
909-625-0056 (Fax 909.625.0082)
•
Working with Platinum RTV Technical Guide………….8
Performance R-2000 Series Silicone……………………….9
Low Viscosity R-2100 Series Silicone……………………..10
Clear Platinum Series…………………………………………...11
SPECIALTY MATERIALS
Food Grade Silicones
Electronic Encapsulate
Cold Molding RTV Shrinking & Expanding Rubbers
Flex Moulding……………………………………………………….24
Low Melt Metal Metal Powders Alginate……….…25
North Hollywood (Store)
10611 Burbank Blvd
N. Hollywood, CA 91601
8:00—4:00pm Mon-Fri
818-985-8850 (Fax 818.985.5658)
ACCESSORIES & SUPPLIES
Releases, Adhesives, Fillers, Colorants
Mixing & Mold Supplies Videos & Books…………26-31
TERMS & CONDITIONS………………………………….32
Page 2
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SILPAK, INC.
Silicone RTV
Special Effects/ Make Up Effects
Glass Eyes
Custom, hand painted Human Eyes with added
corneal bulge for added realism.
28mm/12mm Iris
Available in Pairs: Hazel, Blue, Brown, Green
Appliance Adhesive
MA-200—Silicone Contact Adhesive designed to
off set Dow Corning’s popular 355 Medical
Adhesive of the past. Provides unmatched
bonding performance for demanding
conditions. Thinner is available.
Available Sizes: 2Dram, 4oz & Pint & Gallon
FX Flocking
Fine fibers that can be blended into translucent
Silicones (R-1320) and translucent resins (Siltec)
to create realistic skin colors and texture.
Available Sizes: 2oz and 1 lb Bags.
Press On Putty RTV
Silputty 25—A new addition to our line of easy
to use, quick curing Silputty RTV Series—See
Page 12. This two-part, Platinum based putty is
designed for its lower durometer—25A Shore—
for added flexibility for those custom mold
making and rubber part applications.
Available in Pint, Quart, Gal, 5gal Kits
Low Cost Mold Making RTV
R-1828 A/1824 B high strength, performance,
Tin Based Silicone RTV system designed for
production mold-making applications—25A
Shore.
Tooling & Sculpting Clays
KC Clay Oil based clay used for tooling and
sculpting applications. Compatible with
Platinum Silicone RTV & Epoxy Resin.
Available in Single Bars and Case
3 Types
• KC I—Tan and Medium (1lb Bar)
• KC II—Tan and Soft (1lb Bar)
• KC III—Gray and Soft (2lb Bar)
Bald Caps
Pedro Valdez’s hand made latex bald caps for
the professional Make-Up Artist.
Available: Regular and Pro Cap
Classic Clay unique wax based sculpting clay
that was developed to meet the needs of
sculpting artists and model makers. It offers
easy workability and excellent carving and
shaping properties. It is sulfur free and
compatible with Platinum Silicone and Epoxy
Resins.
Available in 10 lb Slabs and 50 lb Cases
• Color—Tan(Natural) or Dark Brown
• Hardness—Medium or Firm
Tools
Mold Spreader—Stainless steel tool used for
maintaining a split while the mold maker cuts
keys in a block RTV mold. A must have tool for
the Professional!
Groove Knife—Utility knife with a custom
forged curved blade used for cutting tongue
and groove registration channels in block RTV
molds.
Page 3
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SILPAK, INC.
Making A One-Piece Block Mold
To Demonstrate this Mold Making Process, a
Two-Dimensional Model with a flat back is
used. The model will be secured to a base,
release applied, and the RTV rubber poured.
STEP 1 Construct a Box or Simple Frame
This will help contain the liquid mold rubber
and prevent leakage as it hardens over the
model. Make a box or frame using wood,
strong cardboard, acrylic sheet or use a
container made from metal, plastic, or strong
cardboard. Make sure that the frame or box is
at least ½” inch larger than the model’s
perimeter and several inches higher than the
model’s highest point. Apply Release Agent
MR150 to side walls. Note: If constructing a
frame, secure it to a baseboard and seal the
seams using KC Clay or hot melt glue.
STEP 3 Prepare and Pour RTV Mold Rubber
Measure out appropriate amounts of A and B
using an accurate scale. Mix thoroughly,
scraping the sides and bottom of container,
while avoiding whipping air into mix. Pour into
mold cavity, starting from the lowest point and
allowing RTV to flow across model—pushing out
any air. A thin stream of RTV poured from 1218” inches above the mold cavity will release air
as it drops to the surface. Pour enough material
to have at least a ½ “inch of rubber over the
model’s highest point. Allow to cure at 77F.
Note: De-airing material after mixing using a
Vacuum Chamber will minimize air bubbles and
provide a stronger rubber mold, especially with
Silicone RTV.
STEP 2 Secure and Prepare the Model
Center the model and secure it down by gluing
or screwing it to the base. Use KC clay to seal
off the bottom edges of model and to prevent
rubber from flowing underneath. Apply
Release Agent MR150 to all surfaces. Note: If
model is porous (i.e., wood, plaster, concrete,
stone, pottery) it will need to be properly sealed
prior to applying release.
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SILPAK, INC.
STEP 4 Demold RTV Mold Rubber
After RTV mold rubber has cured, typically after
16-24 hours @ 77F, it is ready for removal off
the model—“demolding”. To avoid premature
tearing, starting at one corner of the mold,
slowly and gently pull rubber off model. The
mold should be an exact mirror image of the
model and is now ready for casting.
STEP 2 Embed Model in Clay
Divide model in half—this will serve as the
“parting line” for the 1st half of mold. Position
and press model into clay. Add more clay,
building it up to the parting line. Smooth out
clay using rubbing alcohol. Note: Foil or plastic
wrap is often used to prevent clay from sticking
to the original model prior to embedment.
Making A Two-Piece Block Mold
STEP 3 Prepare Model—Add Alignment Keys
and Pour Hole
Using a pen or pencil, make depressions or
channels—“keys”—in the clay around the
perimeter of the model. These will help to
align the two halves of the mold together.
Next, make a pour hole, which will also serve as
an air vent, using ¼” inch diameter straw, tube
or dowel. Apply Release Agent MR150 to all
surfaces. Note: If model is porous (i.e., wood,
plaster, concrete, stone, pottery) it will need to
be properly sealed prior to applying release.
To Demonstrate this Mold Making Process, a
Three-Dimensional Model of a Figurine is used.
The model will be embedded half-way in clay
and RTV rubber is poured over it to make the 1st
half of the mold, then, when cured, a release is
applied and the 2nd half of the mold is made.
STEP 1 Construct a Box or Simple Frame (See
Step 1 on Page 2) and Add a Layer of Clay
Line entire box with a thin layer of KC Clay. Clay
will secure the model in place. No release is
applied at this time.
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SILPAK, INC.
STEP 4 Prepare and Pour 1st Half of RTV Mold
Rubber— (See Step 3 on Page 2)
Allow RTV to cure at 77F.
STEP 6 Demold RTV Mold Rubber
After 2nd Half of RTV mold rubber has cured for
16-24 hours, remove the model from both
halves. Remove tube used for making the pour
hole.
STEP 5 Prepare and Pour 2nd Half of RTV Mold
Rubber
After RTV mold rubber has cured for 16-24
hours, invert mold and carefully remove clay
without separating the model from the mold
rubber. Next, place cured rubber with model
back into mold box and apply Release Agent
MR150 to all surfaces. Mix and pour 2nd Half of
the mold.
STEP 7 Prepare Mold for Casting
If needed apply release agent to mold rubber.
Reassemble both halves of the mold rubber by
aligning the negative and positive keys
together. Use mold straps or heavy rubber
bands to hold mold together. Mix and pour
casting material. Demold casting when ready.
Page 6
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SILPAK, INC.
SILICONE RTV RUBBER—Tin
Main Features
• User Friendly with Trouble Free Cure
• High Strength Properties—Elongation,
Tensile and Tear
• Good Chemical Resistance
Accessories
• Brushable Catalyst—R-1300thB
• Thixotropic Additive—Thix 5170
• Cure Accelerant—Rapid Set
• Release Agent—MR-150
R-1300 Series Silicones are two-part (A+B),
Condensation-Cure (Tin Catalyzed), room
temperature vulcanizing (RTV), flexible
rubbers designed for their high strength
properties. They are user friendly and cure
over most surfaces, including sulfur clays.
Once cured, these systems are used
primarily for making flexible, high strength,
production molds or parts. Molds can be used
to cast urethane, polyester, epoxy, PVC, wax,
soap, plaster, concrete, low melt metal (350F)
and any pourable material requiring a release
free casting. Available in Pint, Quart, Gal, 5gal
and 55gal Drum Kits
Select appropriate hardness for the application
• R-1318-10 and R-1318 are very soft and
highly flexible, good for fragile castings
• R-1328 is a good general purpose RTV
for most mold making applications
• R-1348A/RN-1348B is extra firm, used
for multi-part molds and foam casting
R-1318-10
R-1318
R-1328
R-1328 A
R-1324 B
R-1348 A
R-1332 B
R-1348 A
RN-1348 B
Color
Green
Green
Green
Blue
Gray
Orange
Mix Ratio
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 5 B
Hardness
Shore A
10
15
25
28
35
40
Mixed
Viscosity
16,000 cps
18,000 cps
25,000 cps
25,000 cps
32,000 cps
42,000 cps
Specific Gravity
1.15
1.17
1.18
1.18
1.14
1.15
Tensile
Strength (psi)
430
380
520
550
500
750
Elongation (%)
620
520
430
500
420
480
Tear Resistance
(pli)
90
100
110
110
110
115
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SILPAK, INC.
SILICONE RTV RUBBER—Tin
R-1320-50
R-1310 LM
R-1310
R-1320
Color
Translucent
Translucent
Translucent
Translucent
Mix Ratio
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
Hardness Shore A
1
5
10
15
Mixed Viscosity
7,000 cps
12,000 cps
12,000 cps
20,000 cps
Specific Gravity
1.07
1.08
1.08
1.09
Tensile Strength
(psi)
250 psi
250 psi
375 psi
503 psi
Elongation (%)
700
650
500
605
Tear Resistance
(pli)
35
50
85
105
Accessories
• Silicone Pigment—Brown, Flesh, Red,
White, Blue, Yellow, Green
• Silicone Paint—D-3430SP Clear—Add
Silicone Pigment for custom color
• Flocking Fibers Red, F lesh, B rown,
Blue, Black, White. Used for adding
realistic texture and coloring.
• Glass Eyes (Large and Small) Blue,
Hazel, Brown, Monster
• Softening Fluid—F-100 Add to adjust
rubber hardness
• Thixotropic Additive—Thix 5170
• Rubber Repair—RTV 4500 is a One-Part
translucent silicone adhesive that is
easily pigmented to desired color.
Translucent Skin Series Silicones are two-part
(A+B), Condensation Cure (Tin Catalyzed), room
temperature vulcanizing (RTV) rubbers.
These rubbers exhibit good strength and
elongation properties, along with good
cured library shelf-life. They are very user
friendly, unlike Platinum RTVs, and cure
over most surfaces, including sulfur clay.
Their translucency allows for easy coloring
using silicone pigments. These are ideal
rubbers for making puppet skins and highly
flexible props and parts. Available in Pint,
Quart, Gal, 5gal and 55gal Drum Kits
Main Features
• Flesh Skin Softness
• User Friendly with Trouble Free Cure
• Low Viscosity
• Excellent P hysical Properties with
H igh Tear Resistance
• Good Library Shelf Life
Fast Cure Catalysts--Clear
Brushable—R-1300TH SP B
Pourable—R-1310 FC B
Gel Time: 10 min Cure Time: 3-4 hours
Use these catalysts in place of the normal
catalyst at the same 100 A : 10 B mix ratio.
Page 8
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SILPAK, INC.
SILICONE RTV RUBBER—Tin
R-1120 Clear Silicone is two-part (A+B),
Condensation Cure (Tin Catalyzed), room
temperature vulcanizing (RTV) rubber. This
system is specifically formulated for
applications where optical clarity is
required. It is used for potting,
encapsulation and special effects. Cured
rubber can easily be processed into
simulated shattered or broken class.
Pre-Cured Blocks—R-1120 provides an optically
clear rubber glass but its long cure cycle for
thick casts (4-6 inches) may take up to a week
to cure. We’ve prefabricated cured 25lb blocks
that are easily broken up to customized sizes.
Block of Clear Rubber Glass
SILICONE RTV RUBBER—Platinum
Inhibiting substances continued……
• Chlorinated Solvents
• Composites—Pre Preg
• Cyanoacrylate Adhesive—Super Glue
• Gel Coats—Polyester
• Gloves made of Latex
• Heavy Moisture
• Latex
• Sulfur-Cured, Organic Rubber
• Some Urethanes—TDI
TECH—Working with PLATINUM RTV
Platinum RTVs (Addition Cure) are excellent
tooling rubbers that produce high strength
molds or parts with long library (storage) shelf
life and dimensional stability (low shrinkage).
These systems solidify with the appropriate
amount of catalyst without any moisture and
will deep-section cure within a closed system.
Hardness ranges from 10 to 80 Shore A.
Cure Inhibition—Non Cure
Platinum RTVs will not cure over certain
surfaces. A contaminating surface is easily
identified because liquid RTV will remain
gummy and tacky after required cure time.
Below is a list of possible inhibiting substances:
• Amines—Epoxy
• Acetone, MEK
• Adhesive Tapes
• Bondo, Paints, Solvents
• Condensation Cure (Tin RTV) R-1000
• Clay—Sulphur Based
A pretest is recommended when compatibility
of the form’s surface is in question. Apply a
small amount to a localized area and check if
rubber is tack free after required cure time. If
surface is inhibiting cure, clean area thoroughly
with isopropyl alcohol and seal it with several
coats of an acrylic lacquer based sealer or clear
coat —allow drying between coats. Run
another pretest. **Mold Master Solution is
available to help with mild inhibition.
Page 9
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SILPAK, INC.
SILICONE RTV RUBBER—Platinum
Main Features
• Dimensional Stability
• High Strength—Tensile
• Excellent Chemical Resistance
• High Temperature Résistance—600F
• Controlled Thermal Expansion
• Excellent Library (Storage) Shelf Life of
Cured Rubber
R-2000 Series Silicone are two-part (A+B),
Addition-Cure (Platinum Base), room
temperature vulcanizing (RTV), flexible
tooling rubbers that provide good strength
properties, dimensional stability, and high
heat (600F) and chemical resistance. They
are used for mold making, embedding, and
electrical and thermal expanding tool
applications, and rubber parts. Molds can be
used to cast urethane, polyester, epoxy, PVC,
wax, soap, plaster, concrete, low melt metal and
any pourable material requiring a release free
casting. Available in Pint, Quart, Gal, 5gal and
55gal Drum Kits
Accessories
• Cure Accelerator—Rapid Cure
• Cure Retarder—R-2000V
• Thixotropic Additive—PE-mini Fibers or
Thix 2 for R-2234
• Softening Fluid—F-100
• Primer—P-1408
• Mold Master Solution—Helps with
mild Inhibition problems
Select appropriate hardness for the application
• R-2324 LM offers good flexibility for
molds needing high stretch.
• R-2234 is good for most mold making
applications—General Purpose RTV
• R-2264 is extra firm, used for multi part
molds, compression tooling
R-2324 LM
R-2234
R-2237 SL
Food Grade
R-2264
R-2364
R-2384
Color
Blue
Blue
Green
Blue
Royal Blue
Blue
Mix Ratio
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
Hardness
Shore A
25
35
35
50
65
75
Mixed
Viscosity
35,000 cps
32,000 cps
38,000
70,000 cps
90,000 cps
110,000 cps
Specific Gravity
1.08
1.08
1.08
1.25
1.28
1.38
Tensile
Strength (psi)
530
525
700
550
650
600
Elongation (%)
510
440
300
300
250
150
Tear Resistance
(pli)
80
90
80
80
110
65
Page 10
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SILPAK, INC.
SILICONE RTV RUBBER—Platinum
R-2100 Series Silicone are two-part (A+B),
Addition-Cure (Platinum Base), room
temperature vulcanizing (RTV), flexible, high
strength rubbers. These systems are
designed with low viscosities for easier
mixing. They are used for mold making,
embedding, and electrical and thermal
expanding tool applications, and rubber
parts. Molds can be used to cast urethane,
polyester, epoxy, PVC, wax, soap, plaster,
concrete, low melt metal and any pourable
material requiring a release free casting. Note:
An accurate scale is required for measurement.
Available in Pint, Quart, Gal, 5gal and 55gal
Drum Kits
Select appropriate hardness for the application
• R-2128 provides good flexibility for
general purpose uses
• R-2138 is firm, yet flexible, good for
multi part molds and foam casting
• R-2157 is extra firm, great for multi part
molds, compression tooling
Main Features
• Low Viscosity for easier mixing
• High Strength—Tensile and Tear
• Excellent Chemical Resistance
• High Temperature Résistance—600F
• Controlled Thermal Expansion
• Excellent Library (Storage) Shelf Life of
Cured Rubber
Accessories
• Thixotropic Additive—PE-mini Fibers
• Primer—P-1408
• Mold Master Solution—Helps with
mild Inhibition problems
R-2128
R-2138
R-2157
Color
Gray
Pinkish
Light Green
Mix Ratio
100 A : 10 B
100 A : 10 B
100 A : 10 B
Hardness
Shore A
25
42
50
Mixed
Viscosity
6,000 cps
10,000 cps
20,000 cps
Specific Gravity
1.25
1.29
1.32
Tensile
Strength (psi)
695
750
650
Elongation (%)
350
350
300
Tear Resistance (pli)
100
125
102
Page 11
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SILPAK, INC.
SILICONE RTV RUBBER—Platinum
Main Features
• Clarity for Prototype Applications
• High Strength—Tensile and Tear
• Excellent Chemical Resistance
• High Temperature Résistance—600F
• Excellent Library (Storage) Shelf Life of
Cured Rubber
Clear Platinum Series are two-part (A+B),
Addition-Cure (Platinum Base), room
temperature vulcanizing (RTV), flexible
tooling rubbers that provide good strength
properties, dimensional stability, and high
heat (600F) and chemical resistance. These
systems offer optimum clarity for prototype
molding applications where precise parting
lines need to cut. They are also used for
embedding, electrical and thermal
expanding tool applications, and for custom
coloring rubber parts. Available in Pint, Quart,
Gal, 5gal and 55gal Drum Kits
Accessories
• Cure Accelerator—Rapid Cure
• Cure Retarder—R-2000V
• Thixotropic Additive—Thix 2
• Softening Fluid—F-100
• Primer—P-1408
• Mold Master Solution—Helps with
mild Inhibition problems
Select appropriate hardness for the application
• R-2310 provides high flexibility, good
for soft part fabrication
• R-2230 is firm, yet flexible, good
General Purpose RTV
• R-2240 works well for multi-part molds,
excellent for prototype molding
Silputty 10 is a unique 1:1 mix, pourable, fast
curing, highly flexible clear Platinum RTV used
in custom part and molding applications—See
Silputty RTV Series Page 11
R-2310
R-2320
R-2230
R-2240
R-2550
Color
Clear
Clear
Clear
Clear
Clear
Mix Ratio
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
100 A : 10 B
Hardness
Shore A
15
25
35
40
53
Mixed
Viscosity
20,000 cps
35,000 cps
35,000 cps
40,000 cps
60,000 cps
Specific Gravity
1.12
1.12
1.08
1.08
1.06
Tensile
Strength (psi)
360
450
650
640
940
Elongation (%)
325
310
350
320
372
Tear Resistance (pli)
60
80
85
100
152
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SILPAK, INC.
SILICONE RTV SILPUTTY SERIES
Silputty BR (Clone Rubber)—Skin Safe,
Lifecasting silicone that can be applied directly
on the skin to make molds of hands, bellies,
faces and other body parts. Poured molds can
also be easily made. Use Plaster Bandages to
rapidly build a mother-mold support. Add
MO-35 Hair Release when Lifecasting.
Silputty RTV Series are Addition-Cure
(Platinum Base), two-part (A+B), flexible RTV
rubbers. These systems offer easy 1:1 mix
ratios and quick cure times, which make
them a great tool for many unique
applications: food molds, custom tool
fixtures, life-casting impressions, texture
pads, equine impressions, architectural
restoration, and any application where a
quick, temporary mold or rubber part is
required. Select appropriate consistency for
application: Press On, Pourable, Brushable
Available in Pint, Quart, Gal, 5gal Kits
Silputty 10—Clear silicone with quick cure and
high flexibility, used in custom part and molding
applications—Make-Up FX appliance parts,
puppet skins, glove mold.
PRO-SCAR Paste—Skin Safe, fast cure silicone
used to produce appliances for make-up effects.
This system colors easily with Silicone Pigments
or Flock Powder and is easily attached with our
high strength MA200 Appliance Adhesive.
Gel Time—3 Minutes Cure Time—5-7 minutes
SILPUTTY 40—Food Grade, General Purpose
Press On rubber with good flexibility.
SILPUTTY LV—Great Pourable System for
making quick molds. Pressure cast rubber to
increase its strength.
SILPUTTY 40
Press On
SILPUTTY
Press On
SILPUTTY 90
Press On
SILPUTTY LV
Pourable
SILPUTTY BR
Pour/ Brushable
SILPUTTY 10
Pourable
Consistency
Putty
Putty
Putty
Liquid
Liquid/Paste
Liquid
Color
Green
Green
Light Purple
Gray
Purple
Clear
Mix Ratio
100 A : 100 B
100 A : 100 B
100 A : 100 B
100 A : 100 B
100 A : 100 B
100 A : 100 B
Hardness
Shore A
40
55
90
20
35
10
Gel / Cure
(minutes)
5/10
5/15
2/ 4.5
15/45
10/20-30
10/60
Mixed
Viscosity
---
---
---
18,000 cps
50,000 cps
5,000 cps
Tensile
Strength (psi)
Elongation (%)
400
350
---
350
450
250
160
100
100
200
500
600
Tear Resistance
(pli)
30
30
20
20
75
40
Page 13
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SILPAK, INC.
URETHANE RTV RUBBER
Main Features
• Excellent Production Mold Life`
• Low Viscosity for Capturing Detail
• High Strength—Tensile and Tear
• Easy to Use Formulations
• Excellent Alkaline and Abrasion
Resistance for Casting Concrete
• Excellent Library (Storage) Shelf Life
Urethane RTV Rubbers are a two-part system
(A+B) that cures to a flexible, high strength,
dimensionally stable, durable rubber. Their
simple mix ratios and low viscosities allow for
easy processing. Hardness ranges from 20 to 95
Shore A. Urethane RTVs are used for making
rubber parts and molds. Molds are best used
for casting plaster, soap, wax and concrete.
Available in Pint, Quart, Gal, 5gal and 55 gal
Drum Kits
Accessories
• Thickening Fillers—PE Mini Fibers and
Fumed Silica
• Colorants—CU Pigments and UDyes
• Release Agents—MR-150 and ER-2300
• Casting Release—MR-100-50 for Plaster
and Concrete castings
Select appropriate hardness for the application
• RU-420—Soft and highly flexible with
high stretch properties
• RU-430 and RU 448—General purpose
mold rubbers
• RU- 455—Fast setting rubber for firm
rubber parts or molds
• RU-365—Extra firmness for applications
needing a fast setting, durable rubber
Color
Mix Ratio
RU-420
RU-430
RU-440
RU-448
RU-550
RU-455
RU-365
Off White
Clear Amber
Clear Amber
Green
Clear-Bluish
Clear Amber
Olive
100 A : 100 B
100 A : 100 B
100 A : 100 B 100 A : 100 B
50 A : 100 B 100 A : 100 B 100 A : 50 B
Hardness
Shore A
20
30
40
45
45
55
65
Mixed Viscosity
800 cps
2,000 cps
3,400 cps
2,500 cps
1,200 cps
4,500 cps
1,500 cps
Elongation (%)
840
1100
425
850
810
480
880
Tensile Strength
(psi)
Tear (pli)
549
402
355
425
405
406
1124
125
98
96
103
65
130
210
Work Time
20 min
20 min
20 min
20 min
45 min
10 min
15-20 min
Demold Time
16-24 hrs
16-24 hrs
16-24 hrs
16-24 hrs
16-24 hrs
2-4 hrs
3-4 hrs
Page 14
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SILPAK, INC.
URETHANE RTV RUBBER continued….
Select appropriate hardness for the application
• Brush On—RU 435 TH Easy to use, fast
setting to build durable molds in a day
• RU-470 and RU-480—Good hardness
for concrete form liners, stamp pads,
and plugs
• RU-280—High impact, fast setting
rubber for tough rubber parts and
flexible architectural decor
• RU-485 and RU-491—Hard, high
strength, tough rubber used for
industrial applications: jigs, rollers,
gaskets and high impact parts
Brush On Mold RU-435 TH with a plastic mother mold
support made with Trowel On 60
RU-470
RU-480
RU-280
RU-485
RU-491
RU-435 TH
Brushable
Color
Clear Yellow
Clear Yellow
Off White
Tan
Clear Amber
Olive
Mix Ratio
100 A : 100 B
100 A : 50 B
25 A : 100 B
100 A : 50 B
100 A : 20 B
100 A : 100 B
Hardness
Shore A
70
80
80
90
95
35
Mixed Viscosity
3,000 cps
5,000 cps
900 cps
6,000 cps
1,600 cps
Thick Paste
Elongation (%)
460
470
150
770
325
695
Tensile Strength
(psi)
422
750
1300
1975
1425
406
Tear (pli)
95
190
280
350
375
85
Work Time
90 min
50 min
7 min
15-20 min
10 min
15-20 min
Demold Time
16-24 hrs
16-24 hrs
25-45 min
10-12 hrs
1.5-2 hrs
3-4 hrs
Page 15
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SILPAK, INC.
LATEX RUBBER
Latex is a one-part, water/ammonia based
liquid rubber compound that air dries to
provide a durable rubber product with high
tensile and tear properties. It is used to make
molds, composite rubber bladders, masks,
animatronic skins, and make-up effects
appliances as well as other custom rubber
products. Latex is applied by brushing, dipping
or spraying and allowed to dry between coats
as multi layer molds or parts are being created.
The viscosity of latex, thick or thin, will
determine the appropriate application.
Available in Pint, Quart, Gal, 5gal, 55gal Drum
Main Features
• High Strength Rubber—Tensile
and Tear
• Reproduces Fine Detail
• Excellent Production Mold Life
for Ornamental Concrete
Industry
BRUSH ON MOLDS
• RL-451-80—Industrial Mold Making
latex for building durable molds
• RL-461—Economical, General Purpose
latex
DIP, SLUSH CAST & SPRAY
• RLM-460—Low viscosity latex for
coating and dipping, use to make masks
and parts
• RL Balloon—Watery thin latex for slush
casting appliances in plaster molds
• RL-561—Casting latex for creating
highly durable, plastic-like hollow parts
• RL-Spray—Very low viscosity latex for
spray applications
Accessories
• Colorant—Latex Pigments—Red,
Yellow, Blue, White, Black, Flesh
• Thinning Agent—RL Thinner to adjust
latex thickness
• Casting Release—MR-100-50 and CO-1
(Castor Oil) for plaster and concrete
castings
• Plugging Filler—RL-400T is ground black
tire rubber added to latex for custom
fill/plug applications
• Plaster—Hydrocal White for slush cast
molds
• Mother Mold Support—Fiberglass Resin
SLR-22 and Cast Shell Plaster
• Fabrics—Burlap and Cheese Cloth
• Flexible Foam—Urethane Flexible
Foams are available as a back filler for
latex skins or masks
• Thickener—RL Cell—Powdered
thickening agent. Add 1-3%.
Page 16
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SILPAK, INC.
URETHANE PLASTIC
Accessories
• Release Agents—ER-2300 & MR-150
• Colorants
CU Pigment—Red, Yellow, Blue, White,
Black, Flesh, Brown
U Dye for Translucency—Black, Yellow,
Red, Blue
Glow Dust—Phosphorescent Glow in
the Dark
Bright Shade Powders—Fluorescent
Glows in Black Light
• Thickener—PE Mini Fiber and Fumed
Silica
• Metal Powders—Bronze, Copper, Gold,
Pewter, Silver
• FILLERS
Weight Reduction—HGF 100 and
Prolite FR
Increase Weight—CC-200
Reduce Shrinkage—GF 3000
Increase Heat Resistance—GAP 25
Urethane casting plastics are a two-part (A+B),
low viscosity liquid that, after mixing, cure to a
hard plastic part within minutes to hours,
depending on the selected urethane system
and part thickness. They are odorless, exhibit
low shrink and are durable, easily paintable and
fillers can be added to adjust cost and alter the
appearance and function of the plastic.
Urethane casting resins are used in art
reproductions, prototype models, stage props,
parts, patterns, and tools. These systems are
formulated with varying gel and cure times,
viscosities, and physical properties. Available
in Pint, Quart, Gal, 5gal and 55gal Drum Kits
Main Features
• Low shrinkage
• High Impact Resistance
• Non Odorous
• Easily Paintable and Machinable
• Low Viscosity
General Purpose, Fast Cast Systems
Color
Mix Ratio
(By Weight)
Siltec
Siltool
Silcast II
Silplastic
Quickcast
Hardcast
Translucent
Tan
White
Tan
White
Tan
100 A : 100 B 100 A : 100 B 100 A : 100 B 100 A : 100 B 100 A : 100 B 100 A : 100 B
Hardness
Shore D
55
65
65
65
70
75
Viscosity A/B
50/480
50/150
75/100
125/150
50/100
150/225
Tensile Strength
(psi)
Gel Time
2565
2050
2435
2450
2390
2425
3 min
3 min
3 min
5 min
3 min
3 min
Demold Time
15-30 min
15-20 min
15-20 min
15-30 min
15-30 min
15-20 min
Page 17
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SILPAK, INC.
URETHANE PLASTIC continued..
Performance & Specialty Systems
Color
Mix Ratio
(By Weight)
Thermocast II
Fastkast 75
Slowcast
Supurcast 80
Trowel On 60
RU-575
Tan
Off White
Translucent
White
Translucent
White
Tan
Clear
100 A : 100 B
100 A : 100 B
100 A : 90 B
100 A : 100 B 100 A : 100 B 100 A : 100 B
Hardness
Shore D
70
75
75
80
80
75
Viscosity A/B
200/250
150/225
50/400
50/425
1000/400
Thick Paste
250 Mixed
Tensile Strength
(psi)
Gel Time
6100
4990
4190
4450
2389
2425
3min
2-3 min
9 min
14 min
8-10 min
14 min
Demold Time
10 min
10 min
1-4 hrs
1-4 hrs
60-90 min
30 min
Select system by application
Clear & Translucent
Siltec is a high impact resistant, translucent,
low cost, fast cast system.
RU-575 is a water clear, non-yellowing plastic
that is used for creating acrylic-like parts. Both
systems are easily colored using translucent
UDyes. Note: Pressure casting is
recommended for casting RU-575 if bubble free
parts are required.
High Temperature Resistance (200F+)
Thermorcast II and Fastkast 75 are fast curing
plastics with high strength properties and high
temperature resistance. Thermocast II with
Gap 25 filler works well for vacuum form
tooling applications.
Longer Work Time for Larger Parts Slowcast
and Supurcast 80 are tough plastics offering
extra work time when casting intricate or thick
parts—4 inches. Note: Not recommended for
thin parts under ¼ inch.
Rotocasting
Quickcast and Silplastic offer low viscosities
and work times that work well for hand or
machine rotocasting hollow parts.
Trowelable Paste
Trowel On 60 self thickens to a paste after
mixing and is demoldable within 3-4 hours.
Creates durable parts and works well for
building mother-mold support shells.
Page 18
www.silpak.com
SILPAK, INC.
URETHANE PLASTIC—Rigid Foam
Accessories
• Release Agents—Partall Paste Wax
• Colorants
CU Pigment—Red, Yellow, Blue, White,
Black, Flesh, Brown
U Dye for Translucency—Black, Yellow,
Red, Blue
Glow Dust—Phosphorescent Glow in
the Dark
Bright Shade Powders—Fluorescent
Glows in Black Light
SP-328 Foam Series are a liquid, two-part
(A+B), that, when mixed, creates a closed cell,
self skinning, light- weight, structural rigid
foam. Densities range from 2.5 to 20 lbs per
cubic foot. These water blown foaming
systems offer good flow and easy 1 to 1 by
volume mix ratios that can be hand mixed or
machine dispensed. Once cured, parts can be
easily stained or painted, sanded, and drilled.
SP-328 Foam Series are used in a variety of light
weight part fabrication. Applications include:
back filling of hollow casted parts, light weight
mother mold supports shells, picture frames,
taxidermy forms, floatation forms, sculpting
foam blocks, insulation and general purpose
void filler. Available in Pint, Quart, Gal, 5gal
and 55gal Drum Kits
Main Features
• 1 to 1 By Volume Mix Ratio
• Self Skinning, Closed Cell
• Paintable and Stainable
• Densities from 2.5 to 20 lbs
• Thixotropic Formula for Building
Support Mother Molds or Fill in
Applications—4 TH and 12 TH
SP-328-2
SP-328-4
SP-328-8
SP-328-12
SP-328-16
SP-328-20
Tan
Tan
Tan
Tan
Tan
Tan
SP-328-4 TH
SP-328-12 TH
THIXOTROPIC
Tan
Mix Ratio
(By Volume)
1 to 1
1 to 1
1 to 1
1 to 1
1 to 1
1 to 1
1 to 1
Density
2.5 lbs cu/ft
4 lbs cu/ft
8 lbs cu/ft
12 lbs cu/ft
16 lbs cu/ft
20 lbs cu/ft
4 lb & 12 lb
Expansion Rate
By Mixed Volume
36 times
18 times
9 times
6 times
4.5 times
2.5 times
NA
60 sec
60 sec
60 sec
60 sec
60 sec
60 sec
60 sec
Rise Time
2-3 min
2-3 min
2-3 min
2-3 min
2-3 min
2-3 min
2-3 min
Demold Time
15 min
15 min
15 min
15 min
15 min
15 min
15 min
Color
Work Time
Page 19
www.silpak.com
SILPAK, INC.
URETHANE PLASTIC—Flexible
Foam
Accessories
• Release Agents—Partall Paste Wax
• Colorants
CU Pigment—Red, Yellow, Blue, White,
Black, Flesh, Brown
U Dye for Translucency—Black, Yellow,
Red, Blue
Glow Dust—Phosphorescent Glow in
the Dark
Bright Shade Powders—Fluorescent
Glows in Black Light
Flexible Foam Series are a liquid, two-part
(A+B), that, when mixed, creates a self skinning,
flexible polyurethane foam. Densities range
from 4 to 15 lbs per cubic foot. These systems
can be hand or meter mixed dispensed. Parts
can be intrinsically colored using CU Pigments
or U Dyes. Applications include: molded
components for aircraft, automobile,
recreational vehicle and furniture industries
(arm rests, head restraints, dashboards, crash
pads); special effects and animatronics; any
fabrication where flexible, low density
polyurethane foam is required. Note: These
systems require aggressive mixing (high shear)
to fully blend components. Mixing blades (Jiffy
Mixers) are required for large batch mixes.
Available in Pint, Quart, Gal, 5gal and 55gal
Drum Kits
Main Features
• Low Viscosity
• Self Skinning
• Rapid Demolding Times
• Densities from 4 to 15 lbs
SP-200-4
SP-400-6
SP-100-8
SP-400-15
Soft, High Flex
Medium Flex
Firm Flex
Hard
Color
White
White
White
White
Mix Ratio
(By Weight)
50 A : 100 B
25 A : 100 B
50 A : 100 B
82 A : 100 B
Density
4 lbs cu/ft
6 lbs cu/Ft
8 lbs cu/ft
15 lbs cu/ft
Work Time
60 sec
60 sec
60 sec
60 sec
Rise Time
90-120 sec
90-120 sec
90-120 sec
90-120 sec
Demold Time
15-25 min
15-25 min
15-25 min
15-25 min
Page 20
www.silpak.com
SILPAK, INC.
EPOXY RESIN
Clear Coatings
These are tough, high impact resistant, low
viscosity systems formulated for water clear
applications: Poured Countertops, Bar and
Table tops, Embedments, and Electronic
Encapsulations. Hardness: 70D
Note: These systems are Non-UV stable and
will yellow over time with direct sun exposure.
• E-108 SP WC with H-499—Thin Section
Cure—1/16” to 2” inches
• E-108 WC with H-403A—Thick Section
Cure—3” inches
Epoxy Resins Systems consist of two-parts, a
Base (E) and Hardener (H), that, when mixed at
a specified mix ratio, provide a tough, strong,
low shrink material upon curing. Epoxies are
known for their adhesive, mechanical strength
and chemical resistance properties. They also
offer excellent water and high heat resistance.
Epoxies are used in many industries—
Aerospace, Automotive and Marine—for
creating composite tools and parts; clear
coating, casting and encapsulating; fabricating
high temperature resistant tools; laminating
and surface coating. Note: A scale is required
for accurate measurements
Available in Quart, Gal and 5gal Kits
*Hardener Ordered Separately
*Hardener Hazardous Ship Charge over 1 lb
Clear Casting
This is a water clear, low viscosity, castable
epoxy for creating Embedments, Colored Parts,
or any application requiring impact resistant,
bubble free parts up to 4” inches thick.
Hardness: 70D Note: These systems are NonUV stable and will yellow over time with direct
sun exposure
• E-108 WC with H-403
Pot Life: 2-4 hours Cure: 48 hours
H-403A—Faster Cure Hardener for
castings under 3” inches thick
Pot Life: 60-90min Cure: 24 hours
Main Features
• High Impact Resistance
• Good Electrical Properties
• Excellent Chemical & Moisture
Resistance
• No VOCs
Select System by Application
Laminating & Surface Coating (Gelcoat)
These systems provide excellent chemical
resistance and durability for Composite Tooling
and Laminating applications.
• E-108 R with H-2052—Clear Laminating
for Carbon Fiber
Hardness: 80D
• E-108 SP with H-1922—General
Purpose Laminating—Translucent
Hardness: 80D
• E-108 GC with H-2072—General
Purpose Surface Coating—Black
Hardness: 90D
H-82R—Use for Higher Temperature
Resistance 300F+
Aluminum Tooling System
This casting system is aluminum filled for high
temperature applications—300F+, used for
making molds and tools: Injection, Vacuum
Forming, Foundry Patterns, Jigs and Fixtures.
Hardness: 90D
Note: Requires Post-Cure for High-Temperature
Service and Optimum Properties.
• E-108 AHT with H-82R
Adhesive and Coating
This is an easy 1-1 mix epoxy system that forms
a creamy, paste-like consistency that is easily
spread over various surfaces: EPS foam, wood,
metal, glass, and carving foam. Also used for
fillet and fairing applications
Pot Life: 90min Cure: 12-16 hours
• Epoxy Putty Paste
Accessories
• Colorants
CU Pigment—Red, Yellow, Blue, White,
Black, Flesh, Brown
U Dye for Translucency—Black, Yellow,
Red, Blue
Page 21
www.silpak.com
SILPAK, INC.
POLYESTER RESIN
Gel Coat
Polyester Resin with thixotropic additives for
non-sag properties that remains tacky between
layers for easy re-coating until it is sealed off
from the air. Used for producing high gloss,
durable parts or molds. It is usually sprayed but
can be hand applied by rolling or brushing.
Add 1.5-2% MEKP Gel Time: 20-25 minutes
• Gel Coat—Available in Clear, Black,
White.
Polyester Resin Systems consist of two-parts, a
Resin and Catalyst (MEKP-RCHP-90), that, when
mixed at a specified ratio, cure to a hard, rigid
part. Fiberglass Mat and Cloth Fabrics,
Chopped Strand, and fillers are typically
saturated or added to increase resin strength.
Applications include: clear coating, composite
tooling, fiberglassing, support shells, clear
castings, and embedments. Note: The amount
of Catalyst added is between 0.5 and 2%, of the
weight of Resin and affects Gel and Cure times.
Available in Pint, Quart, Gal and 5gal
*Catalyst Ordered Separately
*Resin & Catalyst Hazardous Ship Charge over 1
lb
Select System by Application
Clear Coating
Polyester resin specially formulated to provide
a thin, high gloss, UV resistant, clear finish over
various surfaces.
Add 1.5-2% MEKP Gel Time: 15 minutes
• SPR300 UV
Casting
These systems are low viscosity polyester
casting resins that can be casted in thick
sections. Fillers can be added to create
unique, custom finishes.
• SPR 41F—Formulated for casting
water-clear, high impact resistant parts
up to 4+” inches. Non-UV Stable Add
0.5 to 1.5% MEKP
• WEP—Water Extended Polyester
System is emulsified with water and
fillers added to create thick or thin
castings—figurines and reliefs—with
wood or stone-like finishes. Can be
easily finished with water based stains.
**Requires Norox W-60 Catalyst
Accessories
• Polyester Pigments—Red, Yellow, Blue,
White, Black
• Release Agents
Partall Paste Wax #2—General Purpose
Partall Hi Temp Wax
PartAll Film #10 (PVA)—Liquid
• Fabrics
Fiberglass Cloth—4oz and 10oz
Fiberglass Mat—3/4oz and 1.5oz
Chopped Strand—1/4” inch
• Milled Fiber—1/32
• Rollers—Metal ¾”Diameter 3”and
6” Long
• MEKP Dispenser Bottle
Laminating
These systems are used in conjunction with
Fiberglass fabrics or Chopped strands to build
strong, light-weight parts, mother mold support
shells or custom parts.
Add 1-1.5% MEKP
Gel Time: 15 minutes
• SLR-22—General Purpose Laminating
Resin
• SPR-29L—Clear Laminating with UV
Additive. Can be mixed with metal
powder for cold-casting metal parts
Page 22
www.silpak.com
SILPAK, INC.
PLASTER
Mold & Tooling, Dimensionally Stable Casting
Hydrostone produces hard, high strength, solid
parts with excellent water absorption
resistance. Because of its low viscosity, it
reproduces fine details. This product is selfleveling when poured and not suitable for
hollow castings. Applications: quality art and
novelty items, figurines, patterns and for fill
applications.
Mix Ratio (parts): 32 water/ 100 plaster
Set Time: 17-20min Demold: 60-80min
Plaster is a dry powder that, when mixed at a
specified ratio with water, gradually thickens
and hardens. In the process, it heats up and
slightly expands. Silpak supplies a variety of
USG Gypsum Plasters used for casting, mold
making, tooling and production applications.
Note: A scale is recommended for accurate
measurements.
Available in 10 lb, 50 lb and 100 lb**
Select System by Application
Ultracal 30 is a high strength plaster with high
compressive strength and high dimensional
accuracy for tooling applications. Unlike
Hydrostone, it can be used to splash cast
molds. Applications: Molds for foam latex and
PVC part production, dimensionally stable
castings.
Mix Ratio (parts): 38 water/ 100 plaster
Set Time: 17-20min Demold: 60-80min
Mother Mold Support
Cast Shell Plaster offers improved flow control
and low sag. As a thick paste, it allows for
easier spreadability, especially for vertical
application.
Mix Ratio (parts): 60 water/ 100 plaster
Set Time: 15-25min Demold: 45min
Plaster Bandages are plaster embedded fabric
that is supplied in rolls (5”inches wide & 15’feet
long). They are typically cut into strips, soaked
in water, applied to surface and smooth out.
Set Time: 2-4min Cure: 15min.
Available in Single Roll and Case (12 rolls)
Accessories
Hemp Fibers—Natural, unwoven fibrous
strands of hemp. It can be shaped, soaked in
water and mixed with plaster to build lightweight mother mold support shells or parts.
Available in Small Bag, ¼ Bale & Full Bale
Carveable, Hollow Castings, Slip Casting
Hydrocal White can be solid or hollow casted,
producing bright white parts that offer
excellent green strength for less breakage. It is
the only plaster that can be easily carved and
additional plaster added to. Applications: lamp
bases, hollow figurines and to make molds for
slush casting latex because of its water
absorbing capabilities.
Mix Ratio (parts): 45 water/ 100
Set Time: 25-35min Demold: 60-80min
Burlap—Open weave, strong fabric used for
reinforcement.—40” in Wide.
Available in 10yrd & 100yard Roll
Cheese Cloth—Open weave, light-weight fabric
used for reinforcement—36”in Wide.
Available in 20’ft Bags or 100yrd Box
20 Min Plaster is used for its rapid set time and
where physical performance is not important.
Mix Ratio (parts): 70 water/ 100 plaster
Set Time: 25-35min Demold: 60-80min
*Available in only 100 lb Bags
Page 23
www.silpak.com
SILPAK, INC.
CLAY
Oil Based Clay
KC Clays are sulfur free, oil based clays that are
odorless and non-toxic. Unlike water based
clays, they do not dry out and are reusable.
They are compatible with Platinum Silicone and
Epoxy Resins.
Available in Single Bars and Case
3 Types
• KC I—Tan and Medium (1lb Bar)
• KC II—Tan and Soft (1lb Bar)
• KC III—Gray and Soft (2lb Bar)
Water Based Clay
Water Clays are non-sticky, inexpensive clays
used for tooling and modeling applications.
These clays will dry out and need to be kept
sealed or covered.
Available in 25 lb Bags and 50 lb Boxes
• EM-210—Used for building up mold
walls. Can be fired as well.
• EM-217—Contains glycerin, dries out
very slowly therefore providing an
excellent Sculpting medium.
Wax Based Clay
Classic Clay is a versatile, unique wax based
sculpting clay that was developed to meet the
needs of sculpting artists and model makers. It
offers easy workability and excellent carving
and shaping properties. Classic Clay can be
melted into thick slurry and poured into desired
shape. It is sulfur free and compatible with
Platinum Silicone and Epoxy Resins.
Available in 10 lb Slabs and 50 lb Cases
• Color—Tan(Natural) or Dark Brown
• Hardness—Medium or Firm
Page 24
www.silpak.com
SILPAK, INC.
SPECIALTY MOLDING & CASTING
MATERIALS
Expanding Rubber
RUX-410 is a two-part (A+B), Urethane Rubber
System that is casted into a Platinum Silicone
RTV mold to create a rubber part that is soaked
in water and allowed to expand to nearly 100%.
The expansion process may take up to a week,
depending on part’s thickness; therefore,
several enlargements may be necessary to
generate the desired size. Note: Avoid casting
parts thicker than 2”inches.
Available in Pint, Quart, Gal Kits
• Gel Time: 12-15min
• Demold Time: 16-24 hrs
Food Grade Silicone
These two-part (A+B), Addition Cure (Platinum
Base) Systems are designed for making molds
and rubber parts for food contact. They have
been tested to comply with Title 21 (Food &
Drug) Code of Federal Regulations (CFR) Section
177.2600 for “Articles intended for Repeated
Use.” These rubbers are used for making
chocolate, candy, ice, or other food contact
items and molds.
Available in Pint, Quart, Gal and 5gal Kits
• Pourable—R-2237 SL is designed with
extended work time—1.5hrs and
overnight cure. It has good strength
and mold life properties.
• Press On—Silputty 40 is an easy 1-1
mix, quick setting system for making
molds and rubber tools quickly.
Work Time: 5min Cure: 10min
Electronic Encapsulate
R-2262FR is a low viscosity, two-part (A+B),
Addition Cure (Platinum Base) System designed
for electronic and potting encapsulations. It is
formulated for high flammability resistance, as
well as resistance to thermal and mechanical
shock. Mix Ratio: 1-1
Available in Pint, Quart, Gal and 5gal Kits
• Color: Gray
• Durometer—48A
• Pot Life—45min Cure—12 hrs
• Service Temperature: -50F to 400F+
Shrinking Rubber
RU-Reduce IT is a unique, one-part, Urethane
material that is blended with water and casted
into a Platinum Silicone RTV mold to create a
rubber part that shrinks by 50%.
Recommended for size reduction of small parts
only due to its quick gel time. *Flammable Ship
over 1lb
Available in Pint, Quart, Gal Kits
• Gel Time: 30 seconds
• Demold Time: 10-15 minutes
• Dry Time: Up to 1 week
Cold Molding Rubber
R-1324 FC is a two-part (A+B), Condensation
Cure (Tin) Silicone RTV developed for curing
under cold conditions.
Highly flexible molds of frozen parts can be
made in or out of the freezer. An excellent tool
for Taxidermists.
Available in Pint, Quart, Gal and 5gal Kits
• Gel Time: 10min @75F
• Cure Time: 3hrs @75F
Architectural Flex Moulding
RU-280 is a two-part (A+B), Urethane
Elastomer System specially formulated for
creating durable, impact resistant, semi-flexible
parts quickly and easily. Parts are stainable
with oil or water based stains and can be
sanded and nailed without cracking. Note: Bside needs to be premixed before each use.
Available in Quart, Gal, 5gal & Drum Kits
• Captures High Detail
• Gel Time: 7min
• Demold Time: 25-45min
Page 25
www.silpak.com
SILPAK, INC.
SPECIALTY MOLDING & CASTING
MATERIALS
Low Melt Metal
BT Ore is a non-lead, castable white metal alloy
that polishes to a silver like finish. It melts at
310F and is casted at 350F into a Silicone RTV
mold—Platinum Silicone RTV mold rubber is
recommended when casting thick parts. BT
Ore is ideal for making jewelry, belt buckles,
doorknobs, or any part requiring a metal part.
Note: A Teflon coated wok or iron pan works
great as a crucible.
Available in 1.5 to 2 lb Ingots
Metal Powders
Metal powders are added to resins to create
metallic finishes. This method is known as
“Cold Casting,” whereby a metal powder is
blended with a Polyester or Urethane Resin,
and poured, or painted, into a Silicone RTV
mold. Once part has cured, it is removed and
the surface is polished to a desired finish, and
then sealed to prevent oxidation. Powder is
added at a ratio of 3 parts metal to 1 part resin.
**AP-120 is added at a 1:1 ratio.
Available Sizes: 1, 5 & 10 lb Jars, 50 lb Pail
Metal Powders
• Bronze
CB-21
• Copper
CC-11
• Gold
CG-10
• Silver
CS-73
• Pewter
AP-120**
Alginate Lifecasting Mold
Silginate is a skin-safe, powdered molding
compound that, when mixed with water,
hardens to a firm mold material within minutes.
Molds are temporary—lasting 1 or 2 castings—
and is best used to cast plaster. **See Silputty
BR (Clone) for a more durable Lifcasting
material—Page 11.
Mix Ratio: 1:1 By Volume Gel Time: 5min
Note: Water temperature and amounts will
affect strength and cure times—Use 75-80F
water
Available in 1 & 3 lb Bags, 20 lb Box , Drum
Page 26
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
RELEASE AGENTS
Mold Releases are used to aid in the release of
a part when casting from a mold made of
rubber, hard plastic or metal. Parting Agents
are used to separate a mold from a master
pattern during the mold making process. Note:
Some releases leave residue and will need to be
cleaned off the surface of the casting before
any finishing is done.
Mold Master Solution—Used to aid light cure
inhibition when making Platinum Silicone RTV
Molds. It is applied to the model’s surface,
either by brushing or spraying, and allowed to
dry for 10-15min before pouring RTV.
*Available in Pint, Quart, Gal
*Some are Flammable ship over 1lb
CO-1—Castor Oil casting release used on Latex
molds when casting concrete parts. It is usually
diluted with alcohol.
Available in Quart, Gal & 5Gal
MR-100-50—Silicone Free, Water Soluble mold
release used in Urethane, Latex and Silicone
Rubber Molds when casting Concrete products.
Apply straight or diluted with up to 4 parts
water. Lightly apply to mold’s surface by
sponging, brushing or spraying. No need to dry
before casting.
Available in Gal & 5Gal
CT-88H—Dry Film (Teflon), semi-permanent
mold release for Epoxy, Urethane, Silicone,
Polyester, and Thermoset Plastics. It does not
transfer to castings under normal conditions.
Available in Aerosol Can
MR-150—Parting Agent used aid in demolding
of Silicone and Urethane RTV molds from
porous masters—wood, plaster, concrete,
stone. Excellent when making multi-part
Silicone Molds.
*Available in Aerosol Can, Bulk Pint, Gal & 5Gal
E-60—High Solids, Water Based Silicone mold
release and water proofing agent for organic
rubbers, leather, injection plastic, and vinyl.
Available in Gal & 5Gal
ER-2300 & MR-515—General Purpose, Silicone
Based, mold release for casting Epoxy,
Urethane and Polyester Resin parts. Use as a
Parting Agent when making Urethane Rubber
Molds. These releases transfer and parts will
need to be cleaned before any finishing is done.
Note: MR-515 is a higher concentration of
Silicone. DO NOT USE for Silicone to Silicone.
*Available in Aerosol Can, Pint, Gal & 5Gal
MR-150-50—Thick, Brush-On version of MR150. Used for heavily porous surfaces.
Excellent release for Plaster to Plaster.
*Available in Bulk Pint, Gal & 5Gal
PartAll Film #10—Polyvinyl Alcohol Release
(PVA) coating for Fiberglass and Epoxy parts in
hard tools. Dries to thin, paper-like film that
washes off with water. Use as a removable
sealer on porous surfaces.
*Available in Pint and Gal
MC#14 Pre Mix—Silicone/Solvent Based
Release used to rejuvenate and maximize mold
life of Silicone RTV Molds. Typically sprayed or
wiped into a mold at the end of each day and
allowed to dry overnight. Will not transfer to
parts.
Available in Gal for local Pick-up only.
**Concentrate available for UPS shipping
Paste Wax Releases
Partall Paste #2—General Purpose
Partall Hi Temp—350F
Available in Can and Gal
R-101—Silicone Resin (100% solids) that is used
as a release agent for urethane parts from hard
or soft tools. It is diluted with IPA (50/50).
Available in Quart, Gal & 5Gal
Page 27
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
ADHESIVES
Appliance
MA-200—Skin Safe, one part, pressure
sensitive silicone adhesive used for nonpermanent bonding of plastic and rubber
Make-Up Effect’s appliances to the skin.
Provides long lasting bond especially under
demanding conditions. Thinner available.
Available Sizes: 2Dram, 4oz & Pint and Gal
Cyanoacrylates
Maxi Cure—General Purpose, Thick, Best CA
adhesive for most plastics and best choice for
model assembly. It can be carved with a knife
or blade and sanded to form a finish
indistinguishable from plastic.
Set Up: 10-25 sec
Available Sizes: ½oz, 1oz & 2oz Bottles
Insta-Set—CA catalyst that allows CA’s to
quickly cure in thick layers. For difficult to bond
materials, apply it to one surface and CA on the
opposite surface. When brought together, they
will bond instantly. I.
Available Sizes: 2oz & 8oz Bottles
Insta Cure—Watery-Thin, CA adhesive that
wicks into deep joints by capillary action and
cures within seconds. Surfaces that need to be
bonded need to be tight fitting. Good when
working with balsa since it penetrates into the
wood, forming more than just a surface bond.
Set Up: 5-15 sec
Available Sizes: 2oz Bottles
Epoxy
Epoxy Putty Paste—Economical, two-part
(50/50 mix), with long working time of 90
minutes and next day cure—gray color. This
system forms a paste that can be spread over
various surfaces, including styro-foam.
Available Sizes: Pint, Qrt, Gal, 5Gal Kits
Quik Cure (5min) & Mid Cure (15min)—Quick
setting, two-part (50/50 mix), epoxy adhesives.
Parts can be handled in 15 to 45 minutes with
full bond strength reached in 1 to 4 hours.
Once cured, they can be sanded to finish.
Available Sizes: 4.5oz & 9oz Kits
Super-Gold—Odorless CA adhesive that is foam
safe and will not fog clear model parts. When
bonding foam to foam, spray both sides and
then join together. It has more flexibility for
improved shock absorption. Set Up: 10-15
seconds
Available Sizes: ½ oz Bottles
Silicone
RTV 4500—One-part, thixotropic/non-sagging,
translucent/clear silicone adhesive for bonding
and rubber repair applications. Bonds to glass,
ceramic, metal, plastic and silicone rubber.
Available Sizes: 2.8 Tube & 10.3oz Cartridge
IC-2000—Rubberized CA adhesive that forms
shock resistant bonds on porous surfaces. It
has added flexibility for the bonding of metals,
fiberglass, rubber and carbon fiber.
Set Up: 20-40 sec
Available Sizes: ½ oz Bottles
A-400—Two-part, specialty silicone contact
adhesive designed for bonding cured silicone
rubber to various surfaces: silicone rubber,
aluminum, steel, and plastic. Requires 48 hours
for full cure.
Available Sizes: 4oz, Pint, Qrt & Gal Kits
*Flammable Ship over 1lb
Un-Cure—Debonder for CA adhesives.
Dissolves incorrectly bonded parts. Clean
residue off parts with acetone or appropriate
solvent, then wash with soap and water
Available Sizes: 1oz Bottles
Page 28
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
Reduce Shrinkage
GF-3000—High density glass filler used for
creating a scratch resistant surface and
reducing shrinkage.
Add @ 100-200%
FILLERS
Fillers are dry powders that are added to
plastics and rubbers to alter their form or
function. Some filler may thicken for brush-on
applications, decrease shrinkage, increase or
decrease weight, assist in rotocasting, increase
heat resistance or alter the systems
appearance. Many types of filler are versatile
and offer one or more benefits. Fillers are
premixed into Part A prior to blending both
sides. Recommended amounts of filler to add
are based on Total Resin Weight—A+B.
Example: If total resin weight is 200 grams,
using Prolite @ 50%, add 100 grams to mixture.
Note: Always store fillers in an air tight bag or
container to avoid moisture contamination.
Available Sizes: Small & Large Bags
Thickener
• PE Mini Fibers—Add to both resins and
rubbers as a thixotropic agent for brush
on applications. Better than Fumed
Silica and stronger than chopped
fiberglass strands.
Add @5-10%
• Fumed Silica—Add to both resins and
rubbers as a thixotropic agent for brush
on applications.
Add to desired consistency
Marble Filler
MP-200—A blend of powders used to simulate
white marble.
Add @ 50-200%
Increase Heat Resistance
GAP-25—A blend of aluminum and thermoconductive fillers for increasing heat resistance,
reducing shrink and increasing hardness.
Excellent for making thermo forming tools
when added with Thermocast II and Silplastic
urethane resins.
Add @ 50-200%
Metal Powder (See Page 24)
Metal powders are added to resins to create
metallic finishes known as “Cold Casting.”
Powder is added at a ratio of 3 parts metal to 1
part resin.
**AP-120 is added at a 1:1 ratio.
Available Sizes: 1, 5 & 10 lb Jars, 50 lb Pail
Metal Powders
• Bronze
CB-21
• Copper
CC-11
• Gold
CG-10
• Silver
CS-73
• Pewter
AP-120**
Reduce Weight
• HGF-100—Hollow Glass Spheres used
to reduce density and increase
dimensional stability.
Add @ 5 to 10%.
• Prolite FR-50—Fly Ash powder that
reduces weight, improves paint
adhesion, and improves flow of resins
when rotocasting.
Add @ 50%
Granite Powder
Unique filler that is added to clear or
translucent Urethane (Siltec), Polyester and
Epoxy resins for simulated marble. Available:
Green, Luxury Black, Red, Pewter
Add 150 to 200%
Increase Weight
• CC-200—Calcium Carbonate
(Limestone) low cost filler that
increases weight and extends resins.
Add @ 50-200%.
• GF-3000—High density glass filler.
Add @ 50-200%
Fire Retardant
ATH—Alumina Trihydrate powder is added to
Polyester, Epoxy and Urethane resins for fire
retardancy.
Page 29
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
Universal Powdered Colorants
• Bright Shade Powder—Fluorescent,
neon like powders that glow under
Black Light.
Green, Yellow, Orange, Red, Pink
Add @ 1-2%
Available in 2oz & 1 lb Bags
COLORANTS
Silpak supplies colorants for the different
rubber and plastic systems. Primary colors—
red, yellow, blue—can be mixed to create any
custom color. Recommended amounts of
colorant to add is based on total resin weight—
A+B. Example: If total resin weight is 200
grams, using CU Pigment @ 2%, add 4 grams to
mixture. Note: Colorants should be added to
the B-side of Silicones and Urethanes and to the
Base of Epoxy systems. Excessive amounts of
colorant can affect cure time & physical
properties.
Urethane & Epoxy
• CU Pigments—Opaque pigments.
Add @ 1-2%
Red, White, Blue, Black, Brown,
Fleshtone, Yellow
Available in 2oz & 1 lb Jars
•
U Dye—Transparent dye for clear or
translucent systems. Black Dye creates
deep black parts.
Add .5 to 2%
Red, Yellow, Blue, Black
Available in 2oz & 1 lb Bottles
•
Glow Dust—Green Phosphorescent
powder for glow in the dark
applications. Best used in clear or
translucent systems and charged in full
spectrum light for full effect.
Add @ 50 to 100%
Available in 2oz, 4oz and 1 lb Jars
•
FX Flocking Powders—Fine Fibers used
in clear rubber and plastic for creating
intrinsic texture and color.
Flesh, Brown, Black, White, Red,
Blue
Add 1%
Available in 2oz & 1 lb Bags
Silicone
Silicone Pigments—Dispersion pigments.
Red, Yellow, Blue, Black, White, Brown, Orange,
Green, Fleshtone, Royal Blue
Add @ 1-2%
Available in 2oz & 1 lb Jars
Polyester
Polyester Pigments—Red, Black, White, Yellow,
Blue
Add @ 1-2%
Available in 2oz & 1 lb Jars
Latex
Latex Pigment—Red, White, Yellow, Black,
Blue, Fleshtone
Add 1-2%
Available in 2oz & 1 lb Jars
Page 30
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
Hemp Fibers—Natural, unwoven fibrous
strands of hemp. It can be shaped, soaked in
water and mixed with plaster to build lightweight mother mold support shells or parts
with plaster.
Available in Small Bag, ¼ Bale & Full Bale
BRUSHES
•
•
Acid Brushes—1/2” inch wide with tin
handle. Good for small brush on
molds. Single or Box of 144ct
Chip Brushes—1” and 2” wide. Good
for brushing on resin and latex as well
as applying release.
Single & Box of 36 (1”) and 24 (2”)
Fiberglass Mat—3/4oz and 1.5oz chopped
strand mat 50”Wide. Good for economy and
stiffness. Use for contoured surfaces.
Note: Requires about 1.5 to 2 lbs of Resin for
every 1 lb of mat. For every yard of 3/4oz
Mat—16oz of Resin & 1.5oz Mat—32oz of
Resin.
Available in 5 Yard Bags & Roll
BOTTLES & CONTAINERS
Mixing—Durable, reusable plastic tubs.
Available Sizes: Quart, 1/2Gal, Gallon
Measuring—Graduated plastic mixing
containers.
Available Sizes: 1oz, 8oz, 16oz, 32oz,
2 ½ Qrt and 5 Qrt
Fiberglass Cloth—4oz (30”wide) and 10oz
(38”wide) Plain Weave cloth. Provides added
strength and rigidity. Used for marine and
composite construction and repair applications.
Note: Requires about 1 lb of Resin for every 1
lb of Cloth.
Available in 5 Yard Bag & Roll
Bottles—Chemically resistant plastic bottles
w/lid for extra storage of resins, catalysts and
hardeners.
Available Sizes: 16oz, 32oz , ½ Gal & Gallon
• Yorker Cap—Spouted cap w/tips for
easier dispensing of liquids.
Sold individually
GLOVES
Latex & Vinyl—Economical, powderless gloves
used when handling RTVs and resins. Available
Sizes: Small, Medium, Large & Extra Large.
Available in Box of 100ct
MEKP Catalyst Dispenser—16oz bottle for
accurate and easier dispensing of catalyst, from
2.5 to 35cc.
MIXING EQUIPMENT
5GAL Head Pack—Rectangular HDPE storage
container with faucet for easy dispensing of
urethane resins.
Jiffy Mixers—High speed, stainless steel mixing
blades for blending silicones, resins with filler
and large batches of urethane foam. Efficiently
and effectively mix materials while blade is
submerged without whipping in air@ 450-750
RPM. Fits ¼” to ¾” chuck power tools.
• LM—Pint and Quarts
• HS II—Gallon
• HS III—Gallon (Longer shaft—30”)
• E-5—2 to 5 Gallons
Jars & Pails—Plastic containers w/lid for extra
storage of liquids and fillers.
Available Sizes: Jars—Pint & Quart
Pails—Gal & 5 Gallon
FABRICS
Burlap—Open weave, strong fabric used for
reinforcement.—40” in Wide.
Available in 10yrd & 100yard Roll
Mixing Sticks
• Tongue Depressors—6”inch long.
Box of 500ct.
• Paint Sticks—12” inches long.
Bundles of 50.
Cheese Cloth—Open weave, light-weight fabric
used for reinforcement—36”in Wide.
Available in 20’ft Bags & 100yrd Box
Page 31
www.silpak.com
SILPAK, INC.
ACCESSORIES & SUPPLIES
Plastic Bubbles—Sheet of thermoformed, halfround spheres used for making
alignment/registration keys for molds and
mother mold support shells.
Available Sizes: ¾” & 1.5” Diameter
5GAL & DRUM EQUIPMENT
5gal Pail Tilter—Designed to hold a 5gal round
container and allow easy dispensing of rubber
and resin materials. Assembly required.
5GAL Head Pack—Rectangular HDPE storage
container with faucet for easy dispensing of
urethane resins.
Resin Scrapers/Squeegee—4” Wide, reusable
plastic scrapers used for spreading & fairing
applications.
55Gal Drum Rack—Designed to easily load, tilt
and dispense drums. Once loaded, drums can
easily be moved.
Rubber Bands—Latex rubber bands used for
securing multi-part molds together.
Available Sizes: Length—3½, 5 & 7” inches
Width—½ to 5/8” inches. 1 lb Bags.
55Gal Drum Valves—Cast iron valves that
attaches to drum lid.
Available Sizes: ¾” & 2” inch
Scale—Economical & accurate digital scale that
weighs up to 5000grams. Battery or AC adapter
(included) operated.
55Gal Drum Desiccant—Use to protect
Urethane Resins from moisture damage. When
dispensing, air is filtered through the cartridge
and calcium sulfate crystals absorb the
moisture. Needs replacing when all the crystals
turn from blue to pink. Requires purchase of
adapter that is screwed into the small bung
hole on lid.
Available: Cartridge Only and Set of Adapter &
Cartridge
Syringes—Plastic syringes used for a variety of
applications: Injecting resin, dispensing liquid
colors....
Available Sizes: 2oz/60cc Small &Large Tip,
1oz/30cc Curved & Small Tip
Fiberglass Rollers—Aluminum rollers used for
pressing out air bubbles when laminating.
Available Sizes: ¾” Diameter by 3” and 6” long
MOLD TOOLS & SUPPLIES
VIDEOS & BOOKS
Groove Knife—Utility knife with a custom
forged curved blade used for cutting tongue
and groove registration channels in block RTV
molds.
*Replacement Blades are available
Mold Making 101 by Silpak—Step by step
process of making one and two-part molds.
Mold Spreader—Stainless steel tool used for
maintaining a split while the mold maker cuts
keys in a block RTV mold.
A must have tool for the Professional!
Mark Alfrey’s Series—Ultimate Lifecasting,
Monster Head Sculpting, Sculpting the Nude
Figure, Sculpting the Human Head, Sculpting in
Water Clay, Standard Mold & Castings. See it
done by the professionals. Videos last between
30-60 minutes.
Mold Straps—Universal nylon Mold Straps used
to secure mother mold support shells together.
Available Sizes: Length—36”, 48”, 58” & 72”
inches by 1” wide.
Fiberglass Mother Mold by Pedro Valdez
Detailed step by step process of applying
fiberglass and resin when making a support
shell for silicone RTV.
Prop Builder’s Molding & Casting Handbook by
Thurston James—A beginners guide into the
world of plaster, resin, and polymer materials.
Page 32
www.silpak.com
SILPAK, INC.
TERMS & CONDITIONS
Payment Options
Ordering Options
•
•
Online—Internet orders are currently
unavailable. Please visit one of our stores
or phone in your order for “will call” or
shipment by UPS.
•
•
In Store Purchase or Will Call—Visit one of
our store locations in Southern California,
Monday thru Friday during business hours.
• Pomona
470 E. Bonita Ave
Pomona, CA 91767
7:00—4:30pm
909-625-0056 (Fax 909.625.0082)
•
Visa, Mastercard, American Express
COD (Company and Cashier’s
Checks)
In Store—Cash or Company Check
Net Terms—On Approved Credit
Return Policy
All returns require pre-approval and are
subject to a 20% re-stocking fee.
Authorized returns must be in unused,
unopened, original containers and returned
within 30 days of purchase. Buyer pays for
shipping returned product. Shipping costs
on original purchase is not refunded.
North Hollywood
10611 Burbank Blvd
N. Hollywood, CA 91601
8:00—4:00pm
818-985-8850 (Fax 818.985-5658)
Taxes
Sales Taxes are collected in accordance to
California’s State Board of Equalization
Regulations for all California businesses. For
tax exempt status, California Resale Tax
Exemption Certificate must be completed
and on file with us prior to or at time of
purchase. We cannot apply tax exemptions
retroactively.
Orders for Shipment—Contact Pomona
Office @ 909-625-0056.
Shipping Options
United Parcel Service (UPS)—All orders are
shipped via UPS. Orders placed before
12:00pm (PST) are usually shipped same
business day.
*Minimum for UPS orders is $25
(Net Invoice)
*Hazardous Shipping Charges may
apply for some materials
DISCLAIMER: The information and data
contained herein are based on information
Silpak, Inc believes reliable. However,
Silpak, Inc. warrants only that the materials
shall be of merchantable quantity; This
warranty is lieu of all other written or
unwritten, expressed or implied warranties
and Silpak, Inc. expressly disclaims any
warranty of fitness for a particular purpose,
or freedom from patent infringement.
Accordingly User assumes all risks
whatsoever as to the use of these materials
and User’s exclusive remedy as to any
breach of warranty or negligence clam shall
be limited to the purchase price of the
materials. Failure to strictly adhere to
recommended procedures shall relieve
Silpak, Inc. of all liability with respect to the
materials or the use thereof.
Trucking Company—Silpak will shop for
best shipping rate. Recommended for
orders over 500 lbs.
Silpak Truck—For approved deliveries (over
400lbs) within Los Angeles Area. Contact
Customer Service @ 909-625-0056.
Prices
Prices are subject to change without notice.
Page 33
www.silpak.com