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 ,SR ,CR ,Silicon, etc. 2.Various sizes. 3.Superior quality. 4. Different sizes of Oil Seal,Rubber Oil Seal,Rubber Seal, also can make on your size.5.Optional color for you of the Oil Seal,Rubber Oil Seal,Rubber Seal,Rubber Gasket, O-Ring : ...