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Ring Joint Gasket Ring type Joint Gaskets are designed to seal by 'initial line contact' or wedging action between the mating flange and the gasket. By applying pressure on the seal interface through bolt force, the softer metal of the gasket flows in to the micro fine structure of the harder flange material, creating a very tight and efficient seal. Cross Section R oval type The contact face is in oval shape. It provides a high reliability seal. These gaskets comply with ASME B-16.20 R Octagonal Type More accurate in dimensions and surface finish than oval type because it consists of straight surfaces only. A higher torque load is required to flow the gasket material in to imperfections of the flange facings. These gaskets comply with ASME B-16.20 BX Type Designed to ASME B16.20 and API 6A. Interchangeable with the oval and octagonal series of identical reference numbers, and used in the same flange grooves. RX type Designed to ASME B16.20 and API 6A, for use with grooved flanges for special applications involving high pressures from 5000 to 15000 psi.
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