... ring cord, rubber rope,backups, quad rings, square rings, o-cord, square cord,,etc. for NBR, VITON, SILICON,,,,ETC Viton O-RING CORD, viton RUBBER ROPE ... , FLUOROELASTOMER, SILICONE, EPR, NEOPRENE, TEFLON, POLYURETHANE, POLYMYTE MATERIALS.Only cooperate with the factories or wholesalers.we can supply the different type ... . viton seals, FKM seals, silicone seals, NBR seals,o-ring cord, rubber sheet