ST-3080 A/B

80 SHORE A POLYURETHANE ELASTOMER

PRODUCT HIGHLIGHTS: ST-3080 is a multi-purpose elastomer system that can perform many functions. Product characteristics are:

9 Cures at room temperature to produce a strong, resilient elastomer 9 Easy to use 9 Does not contain MOCA, MDA, MDI, or free TDI 9 Moisture resistant during handling and curing 9 Exudate and volatile free. Maintains a dry, tack free surface after cure

TYPICAL PRODUCT USES: 9 Mold fabrication 9 Shock absorbent pads and liners 9 All types of urethane rubber parts 9 Electrical potting and cable sealing applications

PHYSICAL PROPERTIES: Hardness, Shore A, ASTM D-2240 ............................................................................................................................. 80 ± 2 Density, (g/cc) ASTM D-792........................................................................................................................................... 1.12 Cubic Inches per Pound ................................................................................................................................................... 25.2 Color/Appearance..................................................................................................................................... Transparent yellow Tensile Strength, (psi) ASTM D-412............................................................................................................................. 2,700 Modulus @ 100% Elongation (psi) ASTM D-412 .......................................................................................................... 560 Modulus @ 200% Elongation (psi) ASTM D-412 .......................................................................................................... 765 Modulus @ 300% Elongation (psi) ASTM D-412 .......................................................................................................... 920 Elongation, (%) ASTM D-412.......................................................................................................................................... 600 Tear strength, (pli) ASTM D-624 ..................................................................................................................................... 305 Shrinkage, (in/in) linear ASTM D-2566........................................................................................................................ 0.002

HANDLING PROPERTIES:

Mix Ratio (by weight): Part A ........................................................................................................................................ 100 parts by weight Part B .......................................................................................................................................... 50 parts by weight

Mix Ratio (by volume): Part A ....................................................................................................................................... 100 parts by volume Part B ......................................................................................................................................... 50 parts by volume

Specific Gravity: Part A ................................................................................................................................................................. 1.11 Part B ................................................................................................................................................................. 1.09

Viscosity (cps) @ 77°F (25°C) Brookfield: Part A ............................................................................................................................................................... 3,100 Part B .................................................................................................................................................................. 450 Mixed............................................................................................................................................................... 3,000

ST-3080 A/B PAGE 1 OF 2 03/09/2004 For more information call BJB Enterprises, Inc. (714)734-8450 FAX (714)734-8929

HANDLING PROPERTIES (Cont’d):

Color:

Part A ..................................................................................................................................................... light yellow

Part B ........................................................................................................................................................... yellow* Work Time, 100g mass @ 77°F (25°C) ................................................................................................................15 minutes Gel Time .................................................................................................................................................................20 minutes Demold Time @ 77°F (25°C) .................................................................................................................................. 3-4 hours Cure Schedule.................................................................. Full cure in 3-5 days or post cure @180°F (82°C) for 6-8 hours. *Note - Part B darkens with time, upon exposure to air.

MOLD PREPARATION AND RELEASING:

When ST-3080 A/B is used to reproduce molds from plaster, wood or other porous substrates, we would first recommend that they be sealed. Release agents may then be applied over the sealed surface.

NOTE:

Prolonged direct exposure to sunlight can affect the surface of this product. Cover molds or other products when storing outdoors. The cure will be inhibited if cast against a tin catalyzed silicone RTV.

STORAGE:

Store in a cool dry place. Unopened containers of ST-3080 A/B will have a shelf life of 6 months from date of shipment when properly stored under normal indoor conditions, i.e., 77° + 15° F (25° ± 10° C). Open containers of material should be purged with dry nitrogen prior to replacing lids or caps to prevent moisture contamination.

PACKAGING:

1 Gallon kits................................................................................................................................................. 8 lbs. A, 4 lbs. B 5 Gallon kits.............................................................................................................................................. 40 lbs. A, 20 lbs. B 55-Gallon drum kits.............................................................................................................................. 400 lbs. A, 200 lbs. B

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.

ST-3080 A/B PAGE 2 OF 2 03/09/2004 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."