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