Triveni Rubber manufactures Ozone Resistant Rubber made `O` Rings. Triveni Rubber has been awarded ISO 9001:2000 certifications. Triveni Rubber supplies any kind of rubber component or specialized rubber compounds in all kinds of specialty rubbers like nitrile, epichlorohydrin, neoprene, EPDM, polyacrylic, HNBR, hypalon, viton, silicone, PVC/NBR blends, fluorosilicone, fluorocarbons etc. On a turnkey basis. Ozone Resistant Rubber made `O` Rings is used in the L.P.G. Cylinder valves, joint packing and rubber gaskets are made of ozone resistant nitrile rubber. Ozone Resistant Rubber made `O` Rings can be custom fabricated to suit end user applications. The joint packing has also been provided for 22mm and 20mm and 25.6 mm collar valve.