Several material for Oil Seal, Rubber Oil Seal, Rubber Seal, O-Ring,Rubber O-Ring,Rubber Ring Seal and Rubber Gasket. features of vavle stem seals: 1) Materials: NBR, NR, FPM, MVQ, 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 and mold ...