Heat Exchangers Octa Ring Type Gasket

Basic Info.Model NO.R-OCTAMaterial316L,316,304L,304,347ApplicationValveTypeOil SealPerformanceHigh PressureShapeO-RingStandardStandard, NonstandardOther ApplicationFlange , PipelineClassifySealing GasketProcessing MethodForgingTrademarkYIYUTransport PackageSingle White Box/Outer with Wooden CaseSpecificationAPIOriginWenzhou, Zhejiang, ChinaHS Code7318220001Product DescriptionRING JOINT GASKETS R, RX, BXA Ring Joint Gasket (RTJ) provides a strong and durable metal-to-metal seal between two mating RTJ flanges. As the flanges are bolted, the softer material of the ring joint gasket is "squeezed" into the flanges grooves (made of a harder material) and seals the connection very tightly. RTJ gaskets are available in three styles, R (oval, octagonal), RX, and BX.Ring joint gaskets (RTJ) ensure a long lasting and strong seal for flanges, valves, piping spools and vessels at high pressure and temperatures (which are typical conditions for many petrochemical processes).RTJ are available in different designs (called "styles") and dimensions, as illustrated in the picture below (BX, R, and BX).RTJ GASKETS TYPESR Type Ring Joint Gasket (Oval and Octagonal)"Style R" is the most common RTJ gasket type. R type ring joint gaskets are available in oval or octagonal cross-section and manufactured according to API 6A and ASME B16.20 to suit API 6B and ASME/ANSI B16.5 flanges.This type of RTJ gasket is machined to tight manufacturing tolerances to ensure correct installation with standard ASME B16.5 and API 6B ring joint faced flanges. "R style" oval and octagonal RTJ gaskets can seal pressures up to 6.250 psi by ASME B16.20 and up to 5.000 psi according to the API 6A pressure ratings.Type R RTJ gaskets are frequently used for valves covers.Style RX RTJ GasketThe RX type RTJ gasket is manufactured according to API 6A and ASME B16.20 to suit API 6B and ASME/ANSI B16.5 flanges.The RX is a pressure energized version of the R octagonal gasket and fits the R type flat-bottomed groove.The RX has an increased height and utilizes the internal system pressure to energize and improve the seal as internal pressure increases.Some RX sizes have a pressure relief hole to equalize pressure on both sides of the sealing faces.Style BX RTJ GasketThe BX type RTJ gaskets are manufactured according to API 6A and are suitable for use in high-pressure API 6BX flanges.The gaskets form a metal to metal seal on assembly and the efficiency improves as internal pressure increases.All BX sizes have a pressure relief hole to equalize pressure across sealing faces. RTJ GASKET MATERIALSThe material of RTJ gaskets shall match the flanges material but must have a lower hardness: this to ensure that the gasket, and not the flange, get plastically deformed within the groove of the flange as the two mating flanges are bolted together.In case a harder material for the ring type joint is used, the groove of the flange would be damaged as the flanges are tightened (the hardness values for ring joint gaskets are given below).Ring Gasket Material                       Maximum HardnessBrinell Rockwell "B" ScaleSoft iron9056Low-carbon steel 120684-6 chrome 1 ⁄ 2 Mo13072Type 410 17086Type 304 16083Type 316 16083Type 34716083API 6A R-OCTA SIZE