1.O-ring Widely used in all sealing industries. 2. OEM and TS16949 quality 3. 42 years experience. PQK Oil ... Application :automotive,motocycle,agricultural machinery,truck,buses,tralier,home appliances.2. Customized specification and drawings are welcome3. Material: NBR,NR,FKM ... in designing and manufacturing all of oil(water) seals,gasket,o ring ,bolts5. OEM and ODM orders are welcome.6. Company ...