... , dowty seals, u seals,o rings, wipers, oil seals, piston seals, v packings, rod seals, wear rings, piston cups,,,,etc.O-Ring (NBR 72 ... 95 Shore)Covered the most BUNA, FLUOROELASTOMER, SILICONE, EPR, NEOPRENE, TEFLON, POLYURETHANE, POLYMYTE MATERIALS.Only cooperate with the factories or wholesalers ... different type in different sizes.good quantity , better price. X-rings, o ring kit, square ...