Several material for Oil Seal, Rubber Oil Seal, Rubber Seal, O-Ring,Rubber ... EPDM2) Characteristics: high/low temperature-resistant, wearing-resistant, oil-resistant. 3)TC,TB,TA,SC,SB,MG,etc ... Products name oil sealExperiencemore than15 years` experience in rubber parts producing ... demand.ColorFor silicone any color available, for rubber usually black color, depended on your demand