Ring Joint Gasket

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PROPERTIES AND CHARACTERISTICS

Ring joint gaskets are designed for high pressure applications. They are available in a variety of forms to suit different flange formats. It can be used for very high and/or fluctuating pressures (up to 1500 bar), depending on the profile selected. Material selection determines use for high temperatures (up to 1000 °C) and in aggressive media. To ensure proper sealing the surface of contact between the gaskets and flange have to be carefully processed. The small sealing area and high contact pressure results in excellent sealability.

General characteristic

  • RTJs are metallic sealing rings suitable for high pressure and high temperature applications.
  • RTJs are supplied in different profiles.
  • RTJ are always used in combination with special flanges which ensure good and reliable sealing with the correct choice of material and profile.

Application

  • Refineries
  • Power plants
  • Petrochemical industry
  • Pipelines
  • Valves
  • Pressure vessels

Ring Joint Styles

Type R Oval
  • The original ring joint design
  • Can be used on standard flat bottomed groove flanges and older round bottomed groove flanges
  • Can be used for ASME B16.5 flange class 150 to 2500 and API 6B to Class 5000
  • Soft iron and carbon steel gaskets are zinc plated to prevent Corrosion
  • All rings are marked with the ring number, material and the date of manufacture and APl designation.

 

Type R Octagonal
  • An improvement on the original oval design
  • Can be used on standard flat bottomed groove flanges
  • Available for use on ASME B16.5 flange class 150 to 2500, ASME B16.47 Series A flanges and API 6B to Class 5000
  • Soft iron and carbon steel gaskets are zinc plated to prevent Corrosion
  • All rings are marked with the ring number, material and the date of manufacture and APl designation.

 

Type BX
  • Suitable for use on API 6BX Flanges up to Class 20000
  • During installation the ring is compressed inwards to provide additional sealing stress
  • Pressure energised; as the internal pressure increases the sealing force increases
  • Type BX rings are supplied with pressure relief holes to avoid compressing fluid beneath the gasket
  • Can be drilled with additional hole to create a gasket suitable for subsea installation Type "SBX"

 

Type RX
  • Interchangeable with Type R gaskets
  • Pressure energised; as the internal pressure increases the sealing force increases
  • The outer sealing faces make initial contact with the slightly
  • smaller flange groove allowing the gasket to impart
  • additional sealing force
  • Can be drilled with additional hole to create a gasket suitable for subsea installation Type "SRX"
  • Suitable for use on ASME B16.5, API 6B to Class 5000 and ASME B16.47 Series A flanges