valve oil seal -Material:NBR,Viton,EPDM,PTFE,PU,MVQ... -Good Quality and price -Certification: ISO9001:2001 -Manufactory Product and sell all kinds of valve 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 ...