TC valve seal 1.Ozone and chemical resistance 2.High temperature resistance 3.good flexibility, good elasticity TC valve seal1.Materials: NBR, NR ,EPDM ,SBR ... Oil Seal,Rubber Seal,Rubber Gasket, O-Ring :Black, red, yellow, brown, white, green, violet etc, can make it on your order;6 ... . Your OEM order of Oil Seal,Rubber Oil Seal,Rubber Seal or O-Ring and Rubber Gasket ...