our factory specificalzie in All kinds of specification o rings, o-ring kits and o-ring cord, silcione bands, your requests are available; Good quality, reasonable price, promote delivery; Your sample, drawings or idea are welcome'fulfilling different kinds and quantities of orders to provide products from NR, SBR, NBR, EPDM, CR, Silicone, FI, Nylon, Plastic, steel, alininum, braze, copper, stainless and so on;