17SC5002G_TDS.pdf
TC-5002 A/B Page 1 of 2 Date: 02/02/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
SC-5002
SILICONE THINNER
This thinner was developed to help reduce the mixed viscosity of BJB s RTV silicones. The reduced viscosity is advantageous
when pouring into highly detailed areas.
APPLICATION:
SC-5002 can be added to any of BJB s RTV silicones. We would not recommend the addition of more than 20% of SC-5002
to the total mix of the A & B silicone system. Higher levels can significantly reduce the physical properties of the silicone.
The addition of SC-5002 will also lower the shore hardness of the silicone and lengthen the work life and ultimate cure time.
TYPICAL PHYSICAL PROPERTIES
TC-5050 A/B
without SC-5002
TC-5050 A/B
with 5% SC-5002
TC-5050 A/B
with 10% SC-5002
TC-5050 A/B
with 20% SC-5002
Hardness, Shore A 50 A 40 A 37 A 36 A
Hardness, Shore 00 — — — —
Viscosity (cps) 90,000 65,000 50,000 32,000
TC-5024 A/B
without SC-5002
TC-5024 A/B
with 5% SC-5002
TC-5024 A/B
with 10% SC-5002
TC-5024 A/B
with 20% SC-5002
Hardness, Shore A 25 A 14 A 10 A —
Hardness, Shore 00 — 70 00 60 00 52 00
Viscosity (cps) 31,000 23,000 17,000 11,000
HANDLING PROPERTIES
Specific Gravity @ 77 F (25 C) 0.97
Color Clear
STORAGE:
Store ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 12 months from date of
shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING
Quarts 2 lbs.
Gallons 8 lbs.
5-Gallon Kits 40 lbs.
SILICONE CASTING RUBBERS
Dedicated to QUALITY, SERVICE, SAFETY, and INNOVATION
An ISO-9001 Certified company
TC-5002 A/B Page 2 of 2 Date: 02/02/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
NON-WARRANTY “Except for a warranty that materials substantially comply with the data presented in Manufacturer’s latest bulletin describing the product (the basis for this substantial
compliance is to be determined by the standard quality control tests generally performed by Manufacturer), all materials are sold “AS IS” and without any warranty express or implied as
to merchantability, fitness for a particular purpose, patent, trademark or copyright infringement, or as to any other matter. In no event shall Manufacturer’s liability for damages exceed
Manufacturer’s sale price of the particular quantity with respect to which damages are claimed.”
SAFETY PRECAUTIONS:
Use in a well-ventilated area. Avoid contact with skin using protective gloves and protective clothing. Repeated or prolonged
contact on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses
or goggles when handling this product.
IF CONTACT OCCURS:
Skin: Immediately wash with soap and water. Remove contaminated clothing and launder before reuse. It is not
recommended to remove resin from skin with solvents. Solvents only increase contact and dry skin. Seek qualified
medical attention if allergic reactions occur.
Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
Ingestion: If swallowed, call a physician immediately. Remove stomach contents by gastric suction or induce vomiting only
as directed by medical personnel. Never give anything by mouth to an unconscious person.
Refer to the Material Safety Data Sheet before using this product.
17RU480-G_TDS.pdf
17RU448-G_TDS.pdf
17RU385F_TDS.pdf
470 E. BONITA AVE. POMONA, CA 91767
PH (909) 625-0056 WWW.SILPAK.COM FX (909) 625-0082
Rapid Curing Urethane Castable Rubbers
Product Data Sheet
Product Description and Applications
These are two-component, 100% solid Urethane RTV Elastomers that provide a rubber material with good strength properties.
Their simple 1 to 1 mix ratios, low viscosities and ability to cure in Tin or Platinum Silicone RTVs allow for easy processing.
These flexible Urethane RTVs are used in a variety of applications: prototype rubber parts and molds, or any application where a
flexible rubber part is required.
Unique Characteristics
Curable in Tin or Platinum Silicone RTV
Good Tear Resistance and Elongation
Rapid De-mold Times for Prototyping
Ability to INTER-MIX Systems for Custom Hardness/Durometer
RU-320 A/B RU-350 A/B RU-385 A/B
Color Off White Clear Amber Clear Amber
Mixed Viscosity (cps) 500 530 1,570
Mix Ratio 100 A: 100 B 100 A : 100 B 100 A : 100 B
Shore A Hardness 20 50 85
Tensile Strength (psi) 270 260 1105
Elongation % 800 230 270
Tear Resistance (pli) 60 55 180
Specific Gravity 1.02 1.05 1.05
Gel Time (min) 4-5 4-5 4-5
Demold Time (min) 90-120 60-90 60-90
*Full Cure within Days @ 77F or Post cured at 150F for 12-16 Hours
Preparation of Mold
Use a Silicone RTV Mold Tin or Platinum RTV works best with these systems since no mold release is needed when casting
into Silicone RTV. If using Latex, Urethane RTV rubber or any other type of mold, a proper mold release must be used MR150
or ER-2300 is recommended. Ensure that all surfaces are dry and free from moisture prior to casting to prevent material
contamination.
Mixing
Before mixing, ensure that material and molds are at proper working temperature above 65F. These systems are fast curing
and should be processed quickly. Before adding A to B, part B should be stirred or shaken thoroughly to ensure that any
separated material is remixed. Select a clean, dry plastic container for mixing. Avoid using wood or paper products, which could
cause cure problems. Weigh out the proper ratio of A to B and mix well, scraping sides and bottom of mixing container to ensure
a thorough mix. After mixing usually within 45-60 seconds immediately pour into mold.
Curing
Do not disturb the mold until part is ready to be de-molded. Prematurely demolding parts may cause deformation, especially in
thin areas. Preheating molds 100F will expedite cure, while low temperatures will slow curing time and extend the demold
time. To expedite a full cure, post cure parts at 150F for 12-16 hours. Note: Pressure casting applying positive pressure 40-60
psi will improve clarity and rubber performance.
1
2
Storage/Shelf Life
A and B components must be stored in their original, unopened containers at temperatures between 65F and 85F. Shelf life of
materials when kept in unopened sealed containers, at the recommended storage conditions, is 6 months. Containers should
not be opened until ready for use. Once containers are opened, material should be used in a short time period. Pre-test any
aged material before using.
Handling and Safety
Use proper equipment gloves, glasses and apron when using materials. Avoid direct contact with skin and eyes. If skin contact
occurs, clean area with waterless hand cleaner or isopropyl alcohol. For eye contact, flush eye with water for 15 minutes and
call physician. Use materials under adequate ventilation. *See SDS for further information.
ACCESSORIES
Colorants:
All pigments should be added to the “B” side only at 1-2%. Castable urethanes are affected by direct and indirect sunshine and
will discolor over time.
CU Pigment Red, Yellow, White, Blue, Black, Brown, Fleshtone
Bright Shade Powder Green, Orange, Red, Yellow, Pink Dry powdered pigments requiring thorough premixing
UD Dye Red, Yellow, Black, Blue Transparent coloring used in Clear and Transparent Urethane & Epoxy
THE INFORMATION AND DATA CONTAINED HEREIN ARE BASED ON INFORMATION WE BELIEVE RELIABLE. EACH USER OF THE
MATERIAL SHOULD THOROUGHLY TEST ANY APPLICATION AND INDEPENDENTLY CONCLUDE SATISFACTORY PERFORMANCE
BEFORE COMMERCIALIZING. SUGGESTIONS OF USES SHOULD NOT BE TAKEN AS INDUCEMENTS TO INFRINGE ON ANY
PARTICULAR PATENT.
17RLSPRAYF_TDS.pdf
470 E. BONITA AVE., POMONA, CA 91767
PH (909) 625-0056 WWW.SILPAK.COM FX (909) 625-0082
Latex Rubber
RL-SPRAY
Product Data Sheet
RL-SPRAY is a one-part, extremely low viscosity liquid latex that air cures to a strong, papery thin, rubber. Its high elasticity
strength, watery consistency and ability to capture infinite detail make this an ideal sprayable material. It also works well for
making latex appliances in plaster molds made of Hydrocal White. Latex needs to semi dry between coats as multi-layer parts
are being created. Latex will reproduce detail, but has the highest shrink rate of all rubber materials.
Available Sizes: Pint & Quart, Gallon & 5 Gallon, 55 Gallon Drum
Accessories
Pigments Red, Blue, Yellow, Black, White
RL-Thinner Add to adjust latex thickness Better than adding distilled water!!
Hydrocal White Plaster for slush cast molds
Model Preparation:
Model s surface should be clean and free of oil and dirt. Oil clay, wood, stone, and glazed ceramics normally don t need to be
sealed. Plaster, concrete, water-based clay, copper containing items should be sealed with shellac or compatible sealer. For all
other surfaces, run a small test to ensure compatibility if latex sticks or turns dark, apply sealer. Next, secure model to a base
board plywood or something similar.
Processing & Curing Instructions:
Slush casted latex such as a mask or a thin rubber product can be made from dry, unsealed Hydrocal White or
Ultracal 30 plaster molds. After mold is made, dry it in oven at 150F for several hours (this will give plaster mold the best water
absorption ability). Allow mold to cool, then fill mold cavity up with latex and reseal the container to avoid evaporation of
water/ammonia. Lightly vibrating mold may help eliminate bubbles if mold is highly intricate. Latex will thicken against mold
surface as plaster absorbs water. For a thin skin, pour the excess latex immediately back into container. For a thick skin, allow
latex filled mold to sit 1-2 hours, depending on desired thickness, before pouring excess latex material back into container. Latex
is then allowed to dry in mold for 24-36 hours at room temperature. Drying time is based on temperature and humidity. Dry,
warm air is required for fast curing. A de-humidifier can be used for humid conditions. Accelerated cure can be achieved by
oven drying at 100-150F till rubber changes color (darkens). Remove rubber and repeat process. Heat curing will speed up
process, producing parts in hours.
Dipping rubber parts requires a positive of master made of plaster, epoxy or aluminum. Compensate for shrinkage
when building master. Dipping process can be basic dip and hung to dry, or accelerated by the use of RL-CN (Cure accelerator
spray solution) and oven dried.
Spraying latex requires an industrial airless sprayer. Allow each coat to change color before applying additional coats,
or spray part and oven dry between coats 100-150F. Clean sprayer immediately after using and reseal latex container. RL-
Thinner can be used to dilute thickened latex.
Using Latex:
Avoid contact with copper containing metals, oils or solvents. Avoid using petroleum based products, solvents and copper
containing metals with latex rubber. Clean latex with soap and water. Keep cured latex rubber out of direct sunlight.
Storage/Shelf Life:
Store liquid material in cool, dry area out of direct sunlight, in tightly sealed containers, above 60F. Do not allow liquid material
to freeze which will damage latex causing irreversible coagulation.
THE INFORMATION AND DATA CONTAINED HEREIN ARE BASED ON INFORMATION THAT WE BELIEVE TO BE RELIABLE. EACH
USER OF THE MATERIAL SHOULD THOROUGHLY TEST ANY APPLICATION, AND INDEPENDENTLY CONCLUDE SATISFACTORY
PERFORMANCE BEFORE COMMERCIALIZING. SUGGESTIONS OF USAGE SHOULD NOT BE TAKEN AS INDUCEMENTS TO
INFRINGE ON ANY PARTICULAR PATENT.
17REL78-F_TDS.pdf
RELEASE #78 Page 1 of 2 Date: 11/18/2021
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
PIGMENT, RELEASE & MISCELLANEOUS PRODUCT
Dedicated to QUALITY, SERVICE, SAFETY, and INNOVATION
RELEASE #78
Release #78 is a highly effective silicone based release agent designed to release polyurethane elastomers from epoxy, polyester,
rubber, aluminum, and steel molds. Release #78 is a non-aerosol, bulk version of BJB s E-236 urethane release.
Easy to apply
Effective in a temperature range from 70-500 F (21-260 C)
Fast drying
Excellent surface finish to molded parts
APPLICATION:
Thoroughly clean mold to remove all traces of previous coatings and oils. Apply Release #78 using spray equipment. Hold the spray
gun 6 – 8 inches from the mold surface to ensure a light, even coating. When the molds are new or have been blasted with an abrasive,
season the mold by applying a heavy coating of release. Heat the mold to process temperature, then wipe the excess with a rag and
reapply a light coating of Release #78 before a regular molding. Release #78 is fast drying and requires no baking during the normal
molding process. Reapply a light coat before each molding.
NOTE:
Due to the silicone content of this release and its transfer to fabrication materials, finished parts must be abraded and cleaned prior to
any post mold finishing such as bonding or painting. Consult BJB s, technical service department for help with non or low transfer
release agent recommendations.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 12 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING
Release #78 is available in quart, gallon, and 5-gallon size containers.
SAFETY PRECAUTIONS :
Use in a well-ventilated area. Avoid contact with skin by using protective gloves and protective clothing. Repeated or prolonged
contact on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses or
goggles when handling this product.
An ISO-9001 Certified company
RELEASE #78 Page 2 of 2 Date: 11/18/2021
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
NON-WARRANTY “Except for a warranty that materials substantially comply with the data presented in Manufacturer’s latest bulletin describing the product (the basis for this substantial
compliance is to be determined by the standard quality control tests generally performed by Manufacturer), all materials are sold “AS IS” and without any warranty express or implied as to
merchantability, fitness for a particular purpose, patent, trademark or copyright infringement, or as to any other matter. In no event shall Manufacturer’s liability for damages exceed
Manufacturer’s sale price of the particular quantity with respect to which damages are claimed.”
IF CONTACT OCCURS :
Skin: Immediately wash with soap and water. Remove contaminated clothing and launder before reuse. It is not recommended to
remove resin from skin with solvents. Solvents only increase contact and dry skin. Seek qualified medical attention if allergic
reactions occur.
Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
Ingestion: If swallowed, call a physician immediately. Remove stomach contents by gastric suction or induce vomiting only as directed
by medical personnel. Never give anything by mouth to an unconscious person.
Refer to the material safety data sheet before using this product.
17RL461-D_TDS.pdf
470 E. BONITA AVE., POMONA, CA 91767
PH (909) 625-0056 WWW.SILPAK.COM FX (909) 625-0082
Latex Brush-On Rubber
RL-461
Product Data Sheet
RL 461 is a one-part, brush on, medium solids liquid latex that is applied in layers to build a highly tough, tear resistant and
durable mold rubber. Molds are best used to cast plaster and concrete. It is also works well as a texture pad for decorating
concrete or clay models. Latex needs to semi dry between coats as multi layer molds or parts are being created.
Available Sizes: Pint & Quart, Gallon & 5 Gallon, 55 Gallon Drum
TYPICAL PROPERTIES OF CURED RUBBER
Durometer: 40 Shore A
Coverage: lb, 1 ft
2
x 1/16 Thick
Accessories
RL-Thinner Add to adjust latex thickness Better than adding just distilled water!!
RL-400 T Thickener, ground black organic rubber use for plugging undercuts in molds
Burlap Cloth use for reinforcement
MR-100-50 Casting release used for concrete and plaster to improve surface finish
CO-1 Castor Oil release used for concrete and plaster
Model Preparation:
Model s surface should be clean and free of oil and dirt. Oil clay, wood, stone, and glazed ceramics normally don t need to be
sealed. Plaster, concrete, water-based clay, copper containing items should be sealed with shellac or compatible sealer. For all
other surfaces, run a small test to ensure compatibility if latex sticks or turns dark, apply sealer. Next, secure model to a base
board plywood or something similar.
Processing & Curing Instructions: Mold Making
Fasten the part to be molded to a firm base so as to avoid handling piece during brushing No release is necessary in
most cases unless part is highly porous then sealer is applied. When brushing on latex, care should be taken to brush out all
bubbles to assure a smooth, detailed first coat so void-free positives can be made. Brush from the top of model to bottom then
continue on out from base, a distance of about 1.5 – 2 , to create a supporting flange. Continue to build-up flange with each
successive layer of latex. When dry, flange provides an aid in the handling of mold during casting process.
After the first coat has become dry to the touch, subsequent coats may be added allowing each coat to dry before
applying next coat. Depending on environmental conditions the drying time will change from hours to portion of a day 4 to 16
hours. Drying time depends on temperature and humidity and can be improved by the use of heat and moving air over the
surface, with 1 to 2 coats per day. When dry, latex will change color from creamy white to a light tan. Mold consists of 8 to 20
coats depending on desired thickness and latex system used. Thickness ranges between 1/8 and inch thick. Each additional
coating should be brushed in alternating directions (top to bottom, right to left, diagonally) with a checkerboard coat in between
so a laminated structure is created. Applying this technique reduces the dimensional shrinkage of the finished mold.
For deep undercut areas, use RL 400T (thickening/plugging filler). Add to latex system until desired paste is created
a thick peanut butter like consistency and apply to outside latex mold. Once area is filled and allowed to dry, usually within the
hour, brush a final coat of straight latex to seal up area.
To maximize the strength properties of the mold, allow it to fully cure in a warm area for 1-2 weeks before placing into
production. Otherwise, accelerated cure can be achieved if mold is warmed in an oven at 100 to 150F. Once mold is fully cured,
a mother mold support is made out of fiberglass or plaster to support the latex mold.
Using Mold:
Avoid contact with copper containing metals, oils or solvents. When casting with concrete and plaster, using a casting release
MR-100-50 or CO-1 (Castor Oil) is recommended. Wetting the mold s surface prior to casting will assist in eliminating air
bubbles from the mold s surface. Clean latex with soap and water. Keep cured latex rubber out of direct sunlight.
Storage/Shelf Life
Store liquid material in cool, dry area out of direct sunlight, in tightly sealed containers, above 60F. Use within 6months. Do not
allow liquid material to freeze which will damage latex causing irreversible coagulation.
THE INFORMATION AND DATA CONTAINED HEREIN ARE BASED ON INFORMATION THAT WE BELIEVE TO BE RELIABLE. EACH
USER OF THE MATERIAL SHOULD THOROUGHLY TEST ANY APPLICATION, AND INDEPENDENTLY CONCLUDE SATISFACTORY
PERFORMANCE BEFORE COMMERCIALIZING. SUGGESTIONS OF USAGE SHOULD NOT BE TAKEN AS INDUCEMENTS TO
INFRINGE ON ANY PARTICULAR PATENT.
17REL76-G_TDS.pdf
RELEASE #76 Page 1 of 1 Date: 06/21/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
NON-WARRANTY “Except for a warranty that materials substantially comply with the data presented in Manufacturer’s latest bulletin describing the product (the basis for this substantial
compliance is to be determined by the standard quality control tests generally performed by Manufacturer), all materials are sold “AS IS” and without any warranty express or implied as to
merchantability, fitness for a particular purpose, patent, trademark or copyright infringement, or as to any other matter. In no event shall Manufacturer’s liability for damages exceed
Manufacturer’s sale price of the particular quantity with respect to which damages are claimed.”
PIGMENT, RELEASE & MISCELLANEOUS PRODUCT
Dedicated to QUALITY, SERVICE, SAFETY, and INNOVATION
Quality
Managemen
t
System
RELEASE #76
Release #76 is a non-silicone based release agent designed to release a variety of polyurethane material systems from epoxy,
polyester, rubber, aluminum and steel mold surfaces. In most applications the use of this release eliminates the need to sand or
chemically clean part surfaces when preparing for painting or bonding. Cleaning with a liquid soap and water wash is recommended
to remove any residue that may occur on molded parts.
Easy to apply Provides a matte or semi-gloss finish
Does not contain silicone Minimal build-up
APPLICATION:
Thoroughly clean and dry mold surfaces prior to applying Release #76. Apply Release #76 with a spray gun at a distance of 6 to 8
inches away from the mold surface. Adjust spray gun air pressure to ensure a light even coating. New molds or those that have been
chemically cleaned may require an initial heavy application of release and a wipe-out of the excess. It is best to then apply another
light coat prior to use. Release #76 contains petroleum hydrocarbons as the solvent carrier. The dry time for this release may be
extended on cold molds due to its solvent carrier. Mold temperatures in excess of 80 F. will enhance dry time and reduce cycle
times. Generally this release must be applied after each mold cycle. Normally only a very light coat is required after the mold has
been seasoned.
STORAGE:
Store in a cool dry place. Unopened containers will have a shelf life of 6 months from date of shipment when properly stored at room
temperatures.
PACKAGING
Release #76 is available in 1-gallon, and 5-gallon containers
SAFETY PRECAUTIONS:
Use in a well-ventilated area. Avoid contact with skin by using protective gloves and protective clothing. Repeated or prolonged
contact on the skin may cause an allergic reaction. Eye protection is extremely important. Always use approved safety glasses or
goggles when handling this product.
IF CONTACT OCCURS:
Skin: immediately wash with soap and water. Remove contaminated clothing and launder before reuse. It is not recommended to
remove resin from skin with solvents. Solvents only increase contact and dry skin. Seek qualified medical attention if allergic
reactions occur.
Eyes: Immediately flush with water for at least 15 minutes. Call a physician.
Ingestion: If swallowed, call a physician immediately. Remove stomach contents by gastric suction or induce vomiting only as directed
by medical personnel. Never give anything by mouth to an unconscious person.
Refer to the material safety data sheet before using this product.