... piston rod, stuffing box, suction valve spindle, suction valve seat, suction valve spindle guide, exhaust valve spindle, exhaust valve ... seat, exhaust valve spindle guide, exhaust valve casing, exhaust ... bearing, thrust bearing, crosshead, crosshead bearing, and all O rings, gaskets, sealing rings ,etc. B&W Model:L35MC; L35MCE; L42MC; L50MC; ...