SBR 1712 Styrene-butadiene copolymer Ameripol Synpol Styrene copolymer >> Styrene butadiene emulsions SEALANT 1712 is a general-purpose cold, oil-extended SBR. It has excellent processing properties and superior polymer stability. 1712 is widely used, and is recommended for such diverse applications as passenger and heavy-service treads, retread rubbers, bicycle tires, molded and extruded goods, automotive products, seals, hard rubber and wire and cable. General-purpose cold, oil-extended SBR. Possesses a mixed acid emulsifier. Widely used in seals. Possesses very good processing properties and superior polymer stability.