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Ring Type Joints (RTJ’s)

Ring type joints excel in high-pressure, high-temperature applications such as oil field drilling equipment. RTJs are also used on valves and pipework assemblies.

Available in both oval and octagonal configurations (interchangeable on the modern grooved flange). Standard ring type joints are manufactured to meet both API 6A and ASME B16.20 sizes and ratings.

  • Ring Type Joints
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  • 1. RTJ - Style R
     

    Style R ring gasket can be ordered to two different profiles, oval or octagonal in cross-sections. Both types have identical pitch diameter as the flange groove they correspond to. These gaskets are used in pressures up to 10000 psi.

    The octagonal type has a higher sealing coefficient than the oval, therefore being the better gasket of the two. The oval type is the only gasket that will fit a bottom radius groove. Flanges with flat bottom v-grooves will accept either style.

  • 2. RTJ - Style RX
     

    Style RX is a pressure energized adaptation of the standard Style R Ring Type Joint. As the RX is designed to fit the same groove design as a Standard Style R, the joints are interchangeable. Style RX gaskets are designed for pressures up to 15000 psi. These gaskets are interchangeable with r-oval or r-octagonal rings used on API 6B flanges.

    Style RX is more costly than your standard oval or octagonal rings, therefore not as popular. Style RX perform excellent in 6B flanged blowout preventer stacks, which requires the additional mass of the RX to support the higher pressures with higher vibrations and heavier weights of these units.

  • 3. RTJ - Style BX
     

    Style BX gaskets incorporate a pressure balance hole to ensure equalization of pressure which may be trapped in the grooves. Style BX pressure energized Ring Type Joints, manufactured in accordance with API 6A, are designed for use on pressurized systems up to 20000 psi.

    Although similar in style to the octagonal gaskets, the BX Series can only be used with 6BX flanges and 16BX hubs. BX-Gaskets have been designed for higher-pressure ratings starting at 5,000 lbs. and ending with 20,000 lbs.

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