... 2000 Supply oil seal and valve stem seals:We offer oil seals,valve stem seals for different cars, trucks, trailers, ... , motorcycyles, agricultural machinery ,trucks ,buses ,trailers, heavy duty machine ,pump and other euquipment .2) Material : NBR, FPM (VITON) , MVQ ... and manfactureing all the oil seal, water seals, gasket,washer ,PTFE seals, PTFE ring ,teflon gasket ,molded rubber products, rubber ...