Ring Joint Gasket
The ring type joint was initially developed for use in the petroleum industry, where high pressure/temperature applications necessitated the need for a high integrity seal. They are mainly used in the oil field on drilling and completion equipment. Ring type joints are also commonly used on valves and pipework assemblies, along with some high integrity pressure vessel joints.
All RTJ Gasket sizes and materials to the standards listed. We also manufacture customers’ proprietary designs where confidentiality agreements.
Style R
The Style R ring type joint is manufactured in accordance with API 6A and ASME B16.20, to suit API 6B and ASME B16.5 flanges. Style R ring type joints are manufactured in both oval and octagonal configurations. Both styles are interchangeable on the modern flat bottom groove, however only the oval style can be used in the old type round bottom groove. Style R ring type joints are designed to seal pressure up to 6,250 psi in accordance with ASME B16.5 pressure ratings and up to 5,000 psi in accordance with API 6A pressure ratings.
Style RX
The Style RX ring type joint is manufactured in accordance with API 6A and ASME B16.20, to suit API 6B and ASME B16.5 flanges. The Style RX is designed to fit the modern flat bottom groove, and is interchangeable with the standard Style R ring type joint. However, since the Style RX is significantly taller than a Style R, larger flange make up distances will result. Style RX ring type joints are designed to seal pressures up to 6,250 psi in accordance with ASME B16.5 pressure ratings, and up to 5,000 psi in accordance with API 6A pressure ratings. Selected sizes incorporate a pressure passage hole to allow for pressure equalization each side of the sealing faces.
Style BX
The Style BX ring type joint is manufactured in accordance with API 6A. All BX ring type joints incorporate a pressure passage hole to allow for pressure equalization each side of the sealing faces. On assembly, metal to metal contact of the flange faces is achieved. The Style BX is not interchangeable with any other style, and is only suited for API 6BX flanges. Style BX ring type joints are designed to seal pressure up to 20,000 psi in accordance with API 6A pressure ratings.
MOC
RTJ Material – Soft Iron, SS 304, SS304L, SS 316, SS 316L, SS304H, SS316H, SS321, SS410,Duplex 31803, Duplex 32205, Duplex 32750, Duplex 32760, Inconel 600,Inconel 625, Inconel 800, Inconel 825 &Monel 400
Ancillary components
- PTFE inner rings – for sitting in the cavity between flange bore and ring joint to reduce turbulence and flange erosion.
- Rubber coated ring joints – soft iron ring joint gaskets encapsulated by rubber for testing wellhead assemblies and valves. Rings can be reused and do not damage flange grooves.