... piston ring, sel ring ,O-ring, and some kinds of oil separator and turbocharger and so on. Also supply other types ... valve, connecting rod, piston crown, piston skirt, piston rod, stuffing box, suction valve spindle, suction valve seat, suction valve spindle guide ... guide, fuel pump complete, fuel pump roller guide, plunger w/barrel, fuel valve, nozzle, atomizer, spindle & guide, high pressure pipe, ...