1.O-ring Widely used in all sealing industries. 2. OEM and TS16949 quality 3. 42 ... ,NR,FKM,VITON,ACM,EPDM,PTFE,SILICON,MVQ.4. Specially in designing and manufacturing all of oil(water) seals,gasket ... ,o ring ,bolts5. OEM and ODM orders are welcome.6. Company ...