Gas Seals are actually meant for down hole tools. They eliminate the need for complex and costly seal oil systems, and the ongoing maintenance associated with them. The heart of the gas seals is a pair of rings. A stationary ring is held against a rotating ring by spring pressure. The contact face of the rotating ring incorporates special film-riding geometries in the form of groves or tapered lands on the outer portion. As the gas pressure and shaft rotation interact in normal operation, the geometry on the rotating ring creates a dynamic gas pumping or "lifting" effect which pushes the spring-loaded stationary ring away from the rotating ring. A pressure dam effect created by the rings functions as the primary seal and breaks down the gas pressure to just above atmospheric. Gas Seals comes in various type of material. A dry gas type of seal is used for fuel gas booster applications. The use of dry gas seal has become the standard for centrifugal compressors in many applications. This seal system eliminates the bulky and expensive arrangement of high-pressure pumps, filters, regulators, and reservoir that was required by the oil-film type seals of the past. Dry gas seal also improve compressor efficiency, while eliminating the potential fire hazard of the previous seal oil systems. Originally made for compressors, these seals are finding use in chemical plants and oil refineries as dual seals for fugitive emissions. Their attraction is that they do not need the high-pressure liquid barrier systems that are required for the dual seals normally used in these applications. Offshore Seals is also engaged in supplying other seals like O-Rings, V-Packings, API Seal Rings, Packer Elements, Casing O-Rings, Seals for Premium Connections, Bonded Seals, PTFE Seals, Gas Lift Valve Seals, Hydraulic / Pneumatic Seals, Valve Seats, PTFE Joint Sealant and many more.