... required.hydraulic sealing items.backups , dowty seals, u seals,o rings, wipers, oil seals, piston seals, v packings, rod seals, ... wear rings, piston cups,,,,etc.O-Ring (NBR 72 Shore)O-Ring ... FLUOROELASTOMER, SILICONE, EPR, NEOPRENE, TEFLON, POLYURETHANE, POLYMYTE MATERIALS.Only cooperate with the factories or wholesalers.we can supply the different type ...