RING TYPE JOINT GASKETS
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 into the imperfections of the harder flange material, creating a very tight and efficient seal.
STANDARD RING JOINTS
Style R (Oval Octagonal )
|The contact face is in oval shape. It provides a high reliabililty seal. These gaskets are manufactured in accordance to API 6A of ASME B16.20 to suit API613 and ASME/ANSI B16.5 Flanges. Fits the round and flat bottom ring groove flange.|
Style R ( Octagonal )
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 into imperfections of the flange facings. These gaskets comply with API6A of ASME B-16.20. to suit API 6B and ASME/ANSI B16.5 Flanges Fits only the modern flat bottom groove flange.
The BX type RTJ gaskets are manufactured in accordance with 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.
The RX type RTJ gasket is manufactured in accordance 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.
SPECIAL RING JOINTS
The IX-rings are designed and used where the NORSOK CFC (Compact Flange Connections) are in use. The rings come in three different kinds of steel and are coated with PTFE in varying colours in order to distinguish between them.
All markings should be on the inside of the ring.
|FLANGE MATERIAL||SERVICE TEMPERATURE||RING MATERIAL||COLOUR|
|Carbon steel||-50 C to +250 C||Carbon steel CS360LT or low alloy steels, e.g. AISI 4140||Blue|
|Stainless steel||-50 C to +250 C||22Cr Duplex||Yellow|
|Stainless steel||-50 C to +250 C||17/4-PH||Orange|
|Stainless steel||-101 C to +250 C||Nickel alloys such as Alloy 625 or similar||Black|
Ring type joints AX are used in H4 hydraulic connections-sub sea production equipments such as BOP or underwater christmas tree.
|CARBON STEEL, SOFT IRON||MONEL® 400||HASTELLOY B2 & C276|
|316||321||INCOLOY® 800 & 825||DUPLEX|
|316L||3CR12||TITANIUM||PTFE(INNER RINGS ONLY)|
We manufacture Ring type joint gaskets of all sizes and shapes
Ring joint gasket can be manufactured in accordance with all relevant gasket standards and specifications to suit the following flange designations
|API||605 (ASME B16.47 SERIES B)|
|MSS SP||44 (ASME B16.47 SERIES A)|
|RTJ DIMENSION CHART|
|RTJ MATERIAL CHART|