by | Sep 27, 2025
Product Shore A
Durometer
Wt. Mix
ratio
Pot life
Minutes
Demold
time
Total
Cure
Mixed
Viscosity cps
Die C Tear
pli
Tensile
psi
Elongation
%
TDEA30.5-11-M30 30 1:1 30 16 hrs. 7 days <2000 100 274 >800%
TDEA35.5-11-M30 35 1:1 30 16 hrs. 7 days <2000 107 500 >800%
TDEA40.5-11-M15 40 1:1 15 16 hrs. 7 days <2000 111 555 740%
TDEA40.5-11-M25 40 1:1 25 16 hrs. 7 days <2000 93 535 660%
TDEA45.5-11-M15 45 1:1 15 16 hrs. 7 days <2000 108 630 475%
TDEA45.5-11-M25 45 1:1 25 16 hrs. 7 days <2000 100 580 400%
TDEA45.5-11-M45 45 1:1 45 16 hrs. 7 days <2000 125 570 >800%
TDEA50.5-11-M15 50 1:1 15 16 hrs. 7 days <2000 145 950 600%
TDEA50.5-11-M20 50 1:1 20 16 hrs. 7 days <2000 145 890 585%
TDEA50.5-11-M45 50 1:1 45 16 hrs. 7 days <2000 120 660 540%
TDEA55.5-11-M15 55 1:1 15 16 hrs. 7 days <2200 185 840 755%
TDEA55.5-11-M25 55 1:1 25 16 hrs. 7 days <2200 195 830 705%
TDEA55.5-11-M40 55 1:1 40 16 hrs. 7 days <2200 115 700 290%
TDEA60.5-11-M20 60 1:1 20 16 hrs. 7 days <2500 195 1300 590%
TDEA60.5-11-M45 60 1:1 45 16 hrs. 7 days <2500 145 845 450%
TDEA65.5-11-M40 65 1:1 40 16 hrs. 7 days <2500 190 1340 512%
TDEA70.5-11-M25 70 1:1 25 16 hrs. 7 days <3000 230 1470 520%
TDEA75.5-11-M20 75 1:1 20 16 hrs. 7 days <3000 210 1890 300%
TDEA75.5-21-M25 75 2A:1B 25 16 hrs. 7 days <4000 289 1555 760%
TDEA80.5-21-M20 80 2A:1B 20 16 hrs. 7 days <5000 305 2200 550%
TDEA85.5-21-M15 85 2A:1B 15 16 hrs. 7 days <2000 342 2575 430%
All products have negligible shrinkage but should be tested in any specific application and configuration. It is recommended that all products cure for 7 days at 77 F to reach final
properties before use. Parts should be handled more carefully if used before 7 days.
Polyurethane Molding Compounds
TDEA00.5 Series Physical Properties
While the descriptions, designs, data and information contained herein are presented in good faith and believed to be accurate, it is provided for your guidance only. Because many factors may affect processing or application/use, we recommend that you make tests to determine the suitability
of a product for your particular purpose, prior to use. NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATA OR INFORMATION
SET FORTH, OR THAT THE PRODUCTS, DESIGNS, DATA, OR INFORMATION MAY BE USED WITHOUT INFRINGING THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS. IN NO CASE SHALL THE DESCRIPTIONS, INFORMATION, DATA OR DESIGNS
PROVIDED BE CONSIDERED A PART OF OUR TERMS AND CONDITIONS OF SALE. Further, you expressly understand and agree that the descriptions, designs, data, and information furnished by Chemline, Inc. 8-13-2018
Chemline, Inc. 5151 Natural Bridge Rd. St. Louis, MO 63115 Phone : (314) 664 - 2230
by | Sep 27, 2025
Product Shore A
Durometer
Wt. Mix
ratio
Pot life
Minutes
Demold
time
Total
Cure
Mixed
Viscosity cps
Die C Tear
pli
Tensile
psi
Elongation
%
TDEA30.5-11-M30 30 1:1 30 16 hrs. 7 days <2000 100 274 >800%
TDEA35.5-11-M30 35 1:1 30 16 hrs. 7 days <2000 107 500 >800%
TDEA40.5-11-M15 40 1:1 15 16 hrs. 7 days <2000 111 555 740%
TDEA40.5-11-M25 40 1:1 25 16 hrs. 7 days <2000 93 535 660%
TDEA45.5-11-M15 45 1:1 15 16 hrs. 7 days <2000 108 630 475%
TDEA45.5-11-M25 45 1:1 25 16 hrs. 7 days <2000 100 580 400%
TDEA45.5-11-M45 45 1:1 45 16 hrs. 7 days <2000 125 570 >800%
TDEA50.5-11-M15 50 1:1 15 16 hrs. 7 days <2000 145 950 600%
TDEA50.5-11-M20 50 1:1 20 16 hrs. 7 days <2000 145 890 585%
TDEA50.5-11-M45 50 1:1 45 16 hrs. 7 days <2000 120 660 540%
TDEA55.5-11-M15 55 1:1 15 16 hrs. 7 days <2200 185 840 755%
TDEA55.5-11-M25 55 1:1 25 16 hrs. 7 days <2200 195 830 705%
TDEA55.5-11-M40 55 1:1 40 16 hrs. 7 days <2200 115 700 290%
TDEA60.5-11-M20 60 1:1 20 16 hrs. 7 days <2500 195 1300 590%
TDEA60.5-11-M45 60 1:1 45 16 hrs. 7 days <2500 145 845 450%
TDEA65.5-11-M40 65 1:1 40 16 hrs. 7 days <2500 190 1340 512%
TDEA70.5-11-M25 70 1:1 25 16 hrs. 7 days <3000 230 1470 520%
TDEA75.5-11-M20 75 1:1 20 16 hrs. 7 days <3000 210 1890 300%
TDEA75.5-21-M25 75 2A:1B 25 16 hrs. 7 days <4000 289 1555 760%
TDEA80.5-21-M20 80 2A:1B 20 16 hrs. 7 days <5000 305 2200 550%
TDEA85.5-21-M15 85 2A:1B 15 16 hrs. 7 days <2000 342 2575 430%
All products have negligible shrinkage but should be tested in any specific application and configuration. It is recommended that all products cure for 7 days at 77 F to reach final
properties before use. Parts should be handled more carefully if used before 7 days.
Polyurethane Molding Compounds
TDEA00.5 Series Physical Properties
While the descriptions, designs, data and information contained herein are presented in good faith and believed to be accurate, it is provided for your guidance only. Because many factors may affect processing or application/use, we recommend that you make tests to determine the suitability
of a product for your particular purpose, prior to use. NO WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR PURPOSE, ARE MADE REGARDING PRODUCTS DESCRIBED OR DESIGNS, DATA OR INFORMATION
SET FORTH, OR THAT THE PRODUCTS, DESIGNS, DATA, OR INFORMATION MAY BE USED WITHOUT INFRINGING THE INTELLECTUAL PROPERTY RIGHTS OF OTHERS. IN NO CASE SHALL THE DESCRIPTIONS, INFORMATION, DATA OR DESIGNS
PROVIDED BE CONSIDERED A PART OF OUR TERMS AND CONDITIONS OF SALE. Further, you expressly understand and agree that the descriptions, designs, data, and information furnished by Chemline, Inc. 8-13-2018
Chemline, Inc. 5151 Natural Bridge Rd. St. Louis, MO 63115 Phone : (314) 664 - 2230
by | Sep 27, 2025
by | Sep 27, 2025
TC-895 A/B Page 1 of 2 Date: 11/04/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID POLYURETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-895 A/B
RIGID 84 SHORE D HIGH HEAT RESISTANT
POLYURETHANE CASTING SYSTEM
TC-895 A/B is a RoHS compliant, non-mercury based catalyst polyurethane system that produces a tough 84 shore D material.
This system has an extremely high heat deflection temperature and has been used for under the hood automotive applications. In
some cases, TC-895 can be post cured without having to use fixtures.
High heat resistance High impact
RoHS/REACH compliant Working time of 6-7 minutes
PHYSICAL PROPERTIES TEST METHOD
CURE
SCHEDULE 1*
CURE
SCHEDULE 2*
Hardness, Shore D ASTM D2240-04e1 84 2 84 2
Density (g/cc) ASTM D792-00 1.22 1.22
Cubic Inches per Pound N/A 24 24
Color/Appearance Visual
Translucent Pale
Yellow
Translucent Pale
Yellow
Tensile Strength (psi) ASTM D638-03 10,300 10,400
Tensile Modulus (psi) ASTM D638-03 2.93 x 10
5
2.87 x 10
5
Elongation (%) ASTM D638-03 9.1 9.8
Flexural Strength (psi) ASTM D790-03 12,700 12,200
Flexural Modulus (psi) ASTM D790-03 3.17 x 10
5
3.03 x 10
5
Shrinkage (in/in) linear 12 x x 0.008 0.005
Izod Impact, notched (ft-lb/in) ASTM D256-05 0.88 0.95
Heat Deflection Temperature @ 66 psi ASTM D648-04 340 F (171.1 C) 290 F (143.3 C)
Heat Deflection Temperature @ 264 psi ASTM D648-04 218 F (103.3 C) 213 F (100.6 C)
Coefficient of Thermal Expansion (in/in/ F) ASTM E831-06 73.1 x 10
-6
TBD
CURE SCHEDULE 1:
To achieve maximum physical properties, the material should be preconditioned to 77 F (25 C) and the mold approximately to
120 F (49 C). After casting the material, the mold should be placed into a 150 F (66 C) oven and left for 1 hour. After 1 hour
the part can be demolded and then post cured with heat for 16 hours at 180 F (82 C). Support of the part in some cases may be
required to prevent part deformation during the heat curing process.
CURE SCHEDULE 2:
Most of the physical properties can be achieved when casting this product at room temperature then followed with a post cure.
Precondition the material and molds to 77 F (25 C). After casting, leave the part at room temperature for 16 24 hours
followed with a post cure for an additional 16 hours at 180 F (82 C). Support of the part in some cases may be required to
prevent part deformation during the heat curing process.
Note: To obtain higher heat deflection temperatures and faster demold times, it is advised to use heat during the casting process.
TC-895 A/B Page 2 of 2 Date: 11/04/2022
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.”
HANDLING PROPERTIES Part A Part B
Mix Ratio (by weight or volume) 100 50
Specific Gravity 1.16 1.16
Color Pale Yellow Amber
Viscosity (cps) @ 77 F (25 C) Brookfield 1,000 650
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 850
Work Time, 100g mass @ 77 F (25 C) 6 7 minutes
Gel Time 7 8 minutes
Demold Time @ 77 F (25 C) 5 6 hours
Demold Time @ 150 F (66 C) 1 hour
Properties above are typical and not for specifications.
NOTE #1:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can speed up the
process. BJB s AF-4 antifoam works best as the de-airing agent. In conjunction with these support products BJB offers pigments in a
wide variety of colors and stainless steel mixers called Jiffy Mixers . For additional information on the use of this product, refer to
BJB Guidelines for Handling Polyurethane Products. If further information is required, please call BJB s technical staff for assistance.
NOTE #2:
When the cured material is exposed to direct sunlight or strong UV, the material will turn to an orange color within approximately 2
hours.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B Cubic Inches per Kit
Quart Kits 2 lbs. 1 lb. 72
Gallon Kits 8 lbs. 4 lbs. 288
5-Gallon Kits 40 lbs. 20 lbs. 1,440
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.
WARNING: This product can expose you to chemicals including Naphthalene, which is known to the State of California
to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-894 FR REV 1 Page 1 of 2 Date: 02/22/2023
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID FR URETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-894 FR REV 1
RIGID 80 SHORE D URETHANE CASTING SYSTEM
FIRE RETARDANT
This tough 80 Shore D Flame Retardant material is UL Listed with a flammability rating at 1/16 inch (1.6 mm). It s great for hand
casting or machine dispensing electronic enclosures, or any parts requiring flame retardant characteristics. The 2.5 minute work
time exhibits very low shrinkage and exceptional physical properties. Also available in a variety of work times as TC-890, 891,
and 892 FR REV 1.
RoHS/REACH compliant 2.5 minute work time
60 minute demold time
UL 94V-0 Listed, flammability rating at 1/16
thickness (File# E174527)
PHYSICAL PROPERTIES TEST METHOD RESULTS
Hardness, Shore D ASTM D2240-04e1 80 2
Density (g/cc) ASTM D792-00 1.3
Cubic Inches per Pound N/A 21.9
Color/Appearance Visual White/Opaque
Tensile Strength (psi) ASTM D638-03 6,117
Tensile Modulus (psi) ASTM D638-03 2.5 x 10
5
Elongation (%) ASTM D638-03 21
Flexural Strength (psi) ASTM D790-03 10,126
Flexural Modulus (psi) ASTM D790-03 2.81 x 10
5
Shrinkage (in/in) linear 12 x1/2 x1/2 0.0015
Izod Impact, notched (ft-lb/in) ASTM D256-05 0.58
Heat Deflection Temperature @ 66 psi ASTM D648-04 186 F (85.6 C)
Heat Deflection Temperature @ 264 psi ASTM D648-04 168 F (75.6 C)
Dielectric Constant, 1 MHz ASTM D150-87 3.241
Dissipation Factor, 1 MHz ASTM D150-87 0.014
Ball Pressure Test (mm) 167 F (75 C) IEC 60695-10-2 1.3
Note: Reported physical properties are based on test specimens cured at an elevated temperature, 180 F (82 C).
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 70 100
Mix Ratio by volume 79 100
Specific Gravity @ 77 F (25 C) 1.18 1.33
Color Yellow White
Viscosity (cps) @ 77 F (25 C) Brookfield 325 1,450
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 740
TC-894 FR REV 1 Page 2 of 2 Date: 02/22/2023
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.”
HANDLING PROPERTIES (continued)
Work Time, 100g mass @ 77 F (25 C) 2.5 minutes
Gel Time 3 minutes
Demold Time @ 77 F (25 C) 60 minutes
Properties above are typical and not for specifications.
CURE SCHEDULE/HEAT CURING :
Most of the physical properties can be achieved in 5-7 days at 77 F (25 C). You may use your own post-cure schedule but the physical
properties may vary from BJB s cure schedule of 1-3 hours at 77 F (25 C) followed by 16 hours at 180 F (82 C). Do not exceed curing
temperatures of 200 F (93 C). Support of the part may be required to prevent part deformation during the heat curing process.
NOTE:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can speed up the
process. BJB’s AF-5 antifoam works best as the de-airing agent. In conjunction with these support products BJB offers pigments in a
wide variety of colors and stainless steel mixers called “Jiffy Mixers.” If help is required call BJB for assistance. For additional
information on the use of this product, refer to BJB Guidelines for Handling Polyurethane Products.
ACCESSORIES:
BJB offers silicone RTV mold making materials along with a wide range of accessory items. These include de-airing agents, pigments,
mold releases, and Jiffy
Mixers. Visit BJB s website at www.bjbenterprises.com or consult a BJB representative for more information.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B Cubic Inches per Kit
Gallon Kits 5.6 lbs. 8 lbs. 298
5-Gallon Kits 28 lbs. 40 lbs. 1,489
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.
WARNING: This product can expose you to chemicals including 1,2-Benzenedicarboxylic acid, di-C8-10-branced alkyl esters,
C9-rich, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more
information, go to www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-892 A/B Page 1 of 2 Date: 10/25/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID POLYURETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-892 A/B
RIGID 80 SHORE D URETHANE CASTING SYSTEM
TC-892 A/B incorporates a non-mercury based catalyst system that produces a tough 80 shore D material with a 20-minute
work time. This system can be used to hand pour large electronic housings, models of all kinds, and point of purchase
items. This system is also available in a 5-minute work time (TC-890), and a 12-minute work time (TC-891).
Non-mercury RoHS compliant
Convenient mixing ratio: 1 to 1 parts by weight Long working time: 20 minutes
Low viscosity, flows easily
Demold time: 5-6 hours at ambient temperature in
a silicone rubber mold (1/8 thick section)
PHYSICAL PROPERTIES TEST METHOD RESULTS
Hardness, Shore D ASTM D2240 80 2
Density (g/cc) ASTM D792 1.14
Cubic Inches per Pound N/A 25
Color/Appearance Visual Off White/Opaque
Tensile Strength (psi) ASTM D638 7,600
Tensile Modulus (psi) ASTM D638 2.4 x 10
5
Elongation (%) ASTM D638 10
Flexural Strength (psi) ASTM D790 10,000
Flexural Modulus (psi) ASTM D790 2.5 x 10
5
Shrinkage (in/in) linear 12 x1/2 x1/2 0.005
Izod Impact, notched (ft-lb/in) ASTM D256 0.7
Heat Deflection Temperature @ 66 psi ASTM D648 195 F (90.6 C)
Heat Deflection Temperature @ 264 psi ASTM D648 177 F (80.6 C)
Note: Reported physical properties based on elevated temperature cured test specimens.
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 100
Mix Ratio by volume 88 100
Specific Gravity @ 77 F (25 C) 1.18 1.04
Color Yellow White
Viscosity (cps) @ 77 F (25 C) Brookfield 325 830
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 725
Work Time, 100g mass @ 77 F (25 C) 20 minutes
Gel Time 25 minutes
Demold Time @ 77 F (25 C) 5 6 hours
Properties above are typical and not for specifications.
TC-892 A/B Page 2 of 2 Date: 10/25/2022
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.”
CURE SCHEDULE/HEAT CURING :
Most of the physical properties can be achieved in 5-7 days at 77 F (25 C). You may use your own post-cure schedule but
the physical properties may vary from BJB s cure schedule of 1-3 hours at 77 F (25 C) followed by 16 hours at 180 F
(82 C). Do not exceed curing temperatures of 200 F (93 C). Support of the part may be required to prevent part
deformation during the heat curing process.
NOTE:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can
speed up the process. BJB’s AF-7 antifoam works best as the de-airing agent. In conjunction with these support products
BJB offers pigments in a wide variety of colors and stainless steel mixers called “Jiffy Mixers.” If help is required call BJB
for assistance. For additional information on the use of this product, refer to BJB Guidelines for Handling Polyurethane
Products.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of
shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
Cubic Inches
per Kit
Quart Kits 2 lbs. 2 lbs. 100
Gallon Kits 8 lbs. 8 lbs. 400
5-Gallon Kits 40 lbs. 40 lbs. 2,000
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.
WARNING: This product can expose you to chemicals including 1,2-Benzenedicarboxylic acid, di-C8-10-branched
alkyl esters, C9-rich, which is known to the State of California to cause cancer. For more information, go to
www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-890 A/B Page 1 of 2 Date: 11/01/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID POLYURETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-890 A/B
RIGID 80 SHORE D URETHANE CASTING SYSTEM
TC-890 A/B incorporates a non-mercury based catalyst system that produces a tough 80 shore D material with a 5-minute
work time. This system can be used to hand pour electronic housings, models of all kinds, and point of purchase items.
This system is also available in a 20-minute work time (TC-892), and a 12-minute work time (TC-891).
Non-mercury RoHS compliant
Convenient mixing ratio: 1 to 1 parts by weight Low viscosity, flows easily
Demold time: 1-2 hours at ambient temperature in
a silicone rubber mold (1/8 thick section)
PHYSICAL PROPERTIES TEST METHOD RESULTS
Hardness, Shore D ASTM D2240 80 2
Density (g/cc) ASTM D792 1.14
Cubic Inches per Pound N/A 25
Color/Appearance Visual Off White/Opaque
Tensile Strength (psi) ASTM D638 7,600
Tensile Modulus (psi) ASTM D638 2.4 x 10
5
Elongation (%) ASTM D638 10
Flexural Strength (psi) ASTM D790 10,000
Flexural Modulus (psi) ASTM D790 2.5 x 10
5
Shrinkage (in/in) linear 12 x1/2 x1/2 0.004
Izod Impact, notched (ft-lb/in) ASTM D256 0.7
Heat Deflection Temperature @ 66 psi ASTM D648 195 F (90.6 C)
Heat Deflection Temperature @ 264 psi ASTM D648 177 F (80.6 C)
Note: Reported physical properties based on elevated temperature cured test specimens.
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 100
Mix Ratio by volume 88 100
Specific Gravity @ 77 F (25 C) 1.18 1.04
Color Yellow White
Viscosity (cps) @ 77 F (25 C) Brookfield 325 830
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 725
Work Time, 100g mass @ 77 F (25 C) 5 minutes
Gel Time 7 minutes
Demold Time @ 77 F (25 C) 1 2 hours
Properties above are typical and not for specifications.
TC-890 A/B Page 2 of 2 Date: 11/01/2022
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.”
IMPORTANT MIXING DIRECTION:
It is important to remix the B components thoroughly prior to each use.
CURE SCHEDULE/HEAT CURING :
Most of the physical properties can be achieved in 5-7 days at 77 F (25 C). You may use your own post-cure schedule but
the physical properties may vary from BJB s cure schedule of 1-3 hours at 77 F (25 C) followed by 16 hours at 180 F
(82 C). Do not exceed curing temperatures of 200 F (93 C). Support of the part may be required to prevent part
deformation during the heat curing process.
NOTE:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can
speed up the process. BJB’s AF-7 antifoam works best as the de-airing agent. In conjunction with these support products
BJB offers pigments in a wide variety of colors and stainless steel mixers called “Jiffy Mixers.” If help is required call BJB
for assistance. For additional information on the use of this product, refer to BJB Guidelines for Handling Polyurethane
Products.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of
shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
Cubic Inches
per Kit
Quart Kits 2 lbs. 2 lbs. 100
Gallon Kits 8 lbs. 8 lbs. 400
5-Gallon Kits 40 lbs. 40 lbs. 2,000
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.
WARNING: This product can expose you to chemicals including 1,2-Benzenedicarboxylic acid, di-C8-10-branched
alkyl esters, C9-rich, which is known to the State of California to cause cancer. For more information, go to
www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-890 A/B Page 1 of 2 Date: 11/01/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID POLYURETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-890 A/B
RIGID 80 SHORE D URETHANE CASTING SYSTEM
TC-890 A/B incorporates a non-mercury based catalyst system that produces a tough 80 shore D material with a 5-minute
work time. This system can be used to hand pour electronic housings, models of all kinds, and point of purchase items.
This system is also available in a 20-minute work time (TC-892), and a 12-minute work time (TC-891).
Non-mercury RoHS compliant
Convenient mixing ratio: 1 to 1 parts by weight Low viscosity, flows easily
Demold time: 1-2 hours at ambient temperature in
a silicone rubber mold (1/8 thick section)
PHYSICAL PROPERTIES TEST METHOD RESULTS
Hardness, Shore D ASTM D2240 80 2
Density (g/cc) ASTM D792 1.14
Cubic Inches per Pound N/A 25
Color/Appearance Visual Off White/Opaque
Tensile Strength (psi) ASTM D638 7,600
Tensile Modulus (psi) ASTM D638 2.4 x 10
5
Elongation (%) ASTM D638 10
Flexural Strength (psi) ASTM D790 10,000
Flexural Modulus (psi) ASTM D790 2.5 x 10
5
Shrinkage (in/in) linear 12 x1/2 x1/2 0.004
Izod Impact, notched (ft-lb/in) ASTM D256 0.7
Heat Deflection Temperature @ 66 psi ASTM D648 195 F (90.6 C)
Heat Deflection Temperature @ 264 psi ASTM D648 177 F (80.6 C)
Note: Reported physical properties based on elevated temperature cured test specimens.
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 100
Mix Ratio by volume 88 100
Specific Gravity @ 77 F (25 C) 1.18 1.04
Color Yellow White
Viscosity (cps) @ 77 F (25 C) Brookfield 325 830
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 725
Work Time, 100g mass @ 77 F (25 C) 5 minutes
Gel Time 7 minutes
Demold Time @ 77 F (25 C) 1 2 hours
Properties above are typical and not for specifications.
TC-890 A/B Page 2 of 2 Date: 11/01/2022
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.”
IMPORTANT MIXING DIRECTION:
It is important to remix the B components thoroughly prior to each use.
CURE SCHEDULE/HEAT CURING :
Most of the physical properties can be achieved in 5-7 days at 77 F (25 C). You may use your own post-cure schedule but
the physical properties may vary from BJB s cure schedule of 1-3 hours at 77 F (25 C) followed by 16 hours at 180 F
(82 C). Do not exceed curing temperatures of 200 F (93 C). Support of the part may be required to prevent part
deformation during the heat curing process.
NOTE:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can
speed up the process. BJB’s AF-7 antifoam works best as the de-airing agent. In conjunction with these support products
BJB offers pigments in a wide variety of colors and stainless steel mixers called “Jiffy Mixers.” If help is required call BJB
for assistance. For additional information on the use of this product, refer to BJB Guidelines for Handling Polyurethane
Products.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of
shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
Cubic Inches
per Kit
Quart Kits 2 lbs. 2 lbs. 100
Gallon Kits 8 lbs. 8 lbs. 400
5-Gallon Kits 40 lbs. 40 lbs. 2,000
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.
WARNING: This product can expose you to chemicals including 1,2-Benzenedicarboxylic acid, di-C8-10-branched
alkyl esters, C9-rich, which is known to the State of California to cause cancer. For more information, go to
www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-890 A/B Page 1 of 2 Date: 11/01/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
RIGID POLYURETHANES
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-890 A/B
RIGID 80 SHORE D URETHANE CASTING SYSTEM
TC-890 A/B incorporates a non-mercury based catalyst system that produces a tough 80 shore D material with a 5-minute
work time. This system can be used to hand pour electronic housings, models of all kinds, and point of purchase items.
This system is also available in a 20-minute work time (TC-892), and a 12-minute work time (TC-891).
Non-mercury RoHS compliant
Convenient mixing ratio: 1 to 1 parts by weight Low viscosity, flows easily
Demold time: 1-2 hours at ambient temperature in
a silicone rubber mold (1/8 thick section)
PHYSICAL PROPERTIES TEST METHOD RESULTS
Hardness, Shore D ASTM D2240 80 2
Density (g/cc) ASTM D792 1.14
Cubic Inches per Pound N/A 25
Color/Appearance Visual Off White/Opaque
Tensile Strength (psi) ASTM D638 7,600
Tensile Modulus (psi) ASTM D638 2.4 x 10
5
Elongation (%) ASTM D638 10
Flexural Strength (psi) ASTM D790 10,000
Flexural Modulus (psi) ASTM D790 2.5 x 10
5
Shrinkage (in/in) linear 12 x1/2 x1/2 0.004
Izod Impact, notched (ft-lb/in) ASTM D256 0.7
Heat Deflection Temperature @ 66 psi ASTM D648 195 F (90.6 C)
Heat Deflection Temperature @ 264 psi ASTM D648 177 F (80.6 C)
Note: Reported physical properties based on elevated temperature cured test specimens.
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 100
Mix Ratio by volume 88 100
Specific Gravity @ 77 F (25 C) 1.18 1.04
Color Yellow White
Viscosity (cps) @ 77 F (25 C) Brookfield 325 830
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 725
Work Time, 100g mass @ 77 F (25 C) 5 minutes
Gel Time 7 minutes
Demold Time @ 77 F (25 C) 1 2 hours
Properties above are typical and not for specifications.
TC-890 A/B Page 2 of 2 Date: 11/01/2022
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.”
IMPORTANT MIXING DIRECTION:
It is important to remix the B components thoroughly prior to each use.
CURE SCHEDULE/HEAT CURING :
Most of the physical properties can be achieved in 5-7 days at 77 F (25 C). You may use your own post-cure schedule but
the physical properties may vary from BJB s cure schedule of 1-3 hours at 77 F (25 C) followed by 16 hours at 180 F
(82 C). Do not exceed curing temperatures of 200 F (93 C). Support of the part may be required to prevent part
deformation during the heat curing process.
NOTE:
It is advisable whenever possible to evacuate entrapped air prior to casting this system. The use of a de-airing agent can
speed up the process. BJB’s AF-7 antifoam works best as the de-airing agent. In conjunction with these support products
BJB offers pigments in a wide variety of colors and stainless steel mixers called “Jiffy Mixers.” If help is required call BJB
for assistance. For additional information on the use of this product, refer to BJB Guidelines for Handling Polyurethane
Products.
STORAGE:
Store at ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of
shipment when properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
PACKAGING Part A Part B
Cubic Inches
per Kit
Quart Kits 2 lbs. 2 lbs. 100
Gallon Kits 8 lbs. 8 lbs. 400
5-Gallon Kits 40 lbs. 40 lbs. 2,000
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.
WARNING: This product can expose you to chemicals including 1,2-Benzenedicarboxylic acid, di-C8-10-branched
alkyl esters, C9-rich, which is known to the State of California to cause cancer. For more information, go to
www.P65Warnings.ca.gov.
Handling Guide
by | Sep 27, 2025
TC-89 A/B PRIMER Page 1 of 2 Date: 04/24/2024
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
PAINTS / COATINGS
By BJB Enterprises. Inc.
An ISO-9001 Certified company
TC-89 PRIMER
This primer was developed to apply against cured urethane substrates for achieving good adhesion when applying another urethane
product for painting or bonding applications.
APPLICATION:
Apply to clean and dry surface to
1
/10 mil or less in thickness. Spraying is the preferred method of applying this primer, however a
light brush or roller coat is adequate in some cases. Drying times will vary with working conditions. At room temperature, the
primer is generally tack free in 45 minutes to 1 hour.
It is recommended that best adhesion results will be gained by applying coatings, casting materials or other materials on the primer
between 45 and 60 minutes after the primer has been applied. Mixed TC-89 A/B should be used within 1 week.
COVERAGE:
1 pint will cover approximately 40 square feet and will provide about mil dry thickness. NOTE: This may vary depending on the
substrate s absorption characteristics.
HANDLING PROPERTIES Part A Part B
Mix Ratio (by weight) 10 100
Specific Gravity @ 77 F (25 C) 1.23 0.81
Color Dark Brown Colorless
Viscosity (cps) @ 77 F (25 C) Brookfield 250 0.61
STORAGE:
Store ambient temperatures, 65-80 F (18-27 C). Unopened containers will have a shelf life of 6 months from date of shipment when
properly stored at recommended temperatures. Purge opened containers with dry nitrogen before re-sealing.
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.
TC-89 A/B PRIMER Page 2 of 2 Date: 04/24/2024
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.
WARNING: This product can expose you to chemicals including Methyl isobutyl ketone, which is/are known to the State of
California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
NOTE:
Refer to the Safety Data Sheet before using this product. For processing tips and guides, please visit: learn.bjbmaterials.com to
discover additional information.
