|
Ring Type Joints
Ring type joints are precision machined metallic gaskets generally used in high pressure applications such as the Oil, Gas, Petrochemical and Offshore industries.
These joints are designed to concentrate the bolt load over a small area thus producing high sealing stresses. As the Ring Type Joint Material should always be softer than the mating flanges, the high seating stress causes ”plasticflow” of the ring joint in the flange faces creating the seal.
All Metal Gaskets supply Ring Type Joints which are fully approved to API 6A Product Specification level 4, which is the highest quality rating as well as ISO 9001:2000.
RTJ PROFILES
Oval and Octagonal section Ring type Joints are designed for flanges with standard ring type grooves. These standard shapes are used to seal pressures up to 5,000 psi in accordance with API 6A.
The Octagonal cross section has a higher sealing efficiency than the Oval cross section and is therefore preferred. The oval section ring joints were originally designed for the now obsolete round bottom groove. Both the Oval and the Octagonal cross section are interchangeable on the flat bottom groove design.
  Oval Ring Type Joint Profile
  Octagonal Ring Type Joint Profile
BX Ring Type Joints are designed for pressures up to 20,000 psi, suitable only for use with API type BX flanges and grooves. The gasket has a square cross section with bevelled corners. The average diameter of the ring joint is slightly greater than that of the flange groove. This way, when the ring joint is seated, it stays pre-compressed by the outside diameter, creating high seating stress.
  BX Ring Type Joint Profile
RX Ring Type Joints are designed for pressures up to 5,000 psi, they are pressure activated ring joints designed to use the fluid pressure to increase sealability. The outside sealing surface of the ring joint makes the initial contact with the flange. As the internal pressure rises the contact pressure between ring joint and flange also increases. This is sometimes referred to as a pressure activated ring joint due to the shape of the gasket. High seating pressures are created increasing the sealability. This design characteristic makes the RX more resistant to vibrations, pressure surges and shocks that occur during oil well drilling.
  RX Ring Type Joint Profile
AMG Stock
AMG have the largest and most diverse stock of Ring Type Joints anywhere in the UK.
Ring type Joints in Soft Iron/Low Carbon Steel/F5/316/304/321/347/Inconel 625/ Incoloy 825 / C276 & Duplex 31803 in the complete size range - R11 to R10, RX20 to RX215 & BX151 to BX303 are mostly available from stock.
→ Download RTJ Dimensions
Please contact sales@allmetalgaskets.com for more information
|
