... oil seals,valve stem seals for different cars, trucks, trailers, material are NBR, VITON, SILICONE , ... Applications : automobile , motocycles , agricultural machinery , trucks , buses , trailers and exercise equipments.2. Customized specifications are welcome3. Materials : ... and manufacturing all of oil (water) seals gaskets , o rings , bolts.7. OEM and ODM orders are welcome. Oil seals for heavy duty ...