oil seal: 1.Materials: NBR, SILICONE, VITON,HNBR, CR, PTFE, EPDM, etc. 2.Many type of rubber ball oil sealproduct and sell all kinds of oil seal.1. Applications: automobile, motorcycles, agricultural machinery, trucks, buses, trailers and exercise equipments.2. Customized specifications are welcome3. Materials: NBR, RP, FPM, MVQ, ACM, EPDM, PTFE, MFQ and so on.4. outside diameter from: 8 to 1, ...