TC valve seal 1.Ozone and chemical resistance 2.High temperature resistance 3.good flexibility, good elasticity TC valve seal1.Materials: NBR, NR ... 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 :Black, red ... , NYLON, PU, CR, SBR, EP, IIR etc TC valve seal