... ,5mm,6mm,7mm, 8mm,9mm,10mm,11mm,12mm,,,etc.Viton(FKM) shore 75 , and the colors as your requiredTensile strength ... seals, wear rings, piston cups,,,,etc.Covered the most BUNA, FLUOROELASTOMER, SILICONE, EPR, NEOPRENE, TEFLON, POLYURETHANE, POLYMYTE MATERIALS.Only cooperate ... type in different sizes.good quantity , better price. viton seals, FKM seals, silicone seals, NBR seals,o-ring cord, rubber sheet ...