TC-865 A/B Page 1 of 2 Date: 02/07/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com
TC-865 A/B
65 SHORE D POLYURETHANE CASTING SYSTEM
TC-865 A/B is a medium viscosity, economical and easy to handle two component urethane compound. This system cures relatively
fast at room temperature producing tough, impact resistant castings.
PHYSICAL PROPERTIES TEST METHOD TEST RESULTS
Hardness, Shore D ASTM D2240 65 2
Density (g/cc) ASTM D792 1.15
Cubic Inches per Pound N/A 24
Color/Appearance Visual Cream / Opaque
Tensile Strength (psi) ASTM D412 2,475
Tensile Modulus (psi) ASTM D412 99,000
Elongation (%) ASTM D412 70
Flexural Strength (psi) ASTM D790 2,875
Flexural Modulus (psi) ASTM D790 92,850
Tear Strength (pli) ASTM D624 585
Shrinkage (in/in) linear 12 x1/2 x1/2 0.005
Izod Impact (ft-lb/in) notched ASTM D256 0.85
HANDLING PROPERTIES Part A Part B
Mix Ratio by weight 100 100
Mix Ratio by volume 100 95
Specific Gravity @ 77 F (25 C) 1.13 1.18
Color Pale Yellow Cream
Viscosity (cps) @ 77 F (25 C) Brookfield 1,350 1,500
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 1,400
Work Time, 100g mass @ 77 F (25 C) 9 11 minutes
Gel Time 12 15 minutes
Demold Time @ 77 F (25 C) 2 3 hours
Properties above are typical and not for specifications.
SHORE D SEMI-RIGID URETHANES
Dedicated to QUALITY, SERVICE, SAFETY, and INNOVATION
An ISO-9001 Certified company
TC-865 A/B Page 2 of 2 Date: 02/07/2022
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 temperature of 200 F (93 C).
PIGMENTING:
TC-865 A/B naturally produces light cream colored parts, but may be easily tinted to any color from light pastels to deep tones using
BJB’s 6800 Series pigments. The 6800 Series pigments are dispersions which can be used to a maximum of 2% to the total weight of
the TC-865 A/B. Dry pigments, such as fluorescent colors, may also be used. Recommended levels of dry pigments are 5 – 10% to
the total weight of the TC-865 A/B system.
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 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 8 lbs. 8 lbs. 384
5-Gallon Kits 40 lbs. 40 lbs. 1,920
55-Gallon Drum Kits 400 lbs. 400 lbs. 19,200
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 N-Methylpyrrolidone and Naphthalene, 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