valve oil seal -Material:NBR,Viton,EPDM,PTFE,PU,MVQ... -Good ... -Certification: ISO9001:2001 -Manufactory Product and sell all kinds of valve oil seal : 1. Applications: automobile, motorcycles, agricultural machinery, trucks, buses ... 1,000mm.5. Produced by precise CNC machine.6. Specialized in designing and manufacturing all of oil (water) seals, gaskets, o ...