Synthetic Rubbers SBR 1500, 1502, 1712 and 1705 Butyl Rubber BK 1675 Polybutadiene Rubber BR 1220 [Iran] Polybutadiene Rubber Nd [Russia] Bromo Butyl Rubber [BBK 232] Chloro Butyl Rubber [CBK] Acrylonitrile Rubber [NBR] EPDM Reclaim Rubber Synthetic Petroleum Rubber Sodium Butadiene Rubber Chloroprene Rubber HSR 1904.