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 ... , EPDM2) Characteristics: high/low temperature-resistant, wearing-resistant, oil-resistant. 3)TC,TB,TA,SC,SB,MG,etc Products ... , NR, SBR, NBR., EPDM, CSM, CR, HNBR, VITON, AFLAS etc.(Make comparison and evaluation to the performance and ...