Ring Joint

• Typical applications is the “Christmas Tree” in oil fields
• The seal is obtained in a line of contact by a wedge action with high seating pressures, thus forcing the gasket material to flow
• The small sealing area with high contact pressure results in great reliability

RJ Materials

Soft Iron – 56 Hardness
Carbon Steel – 68 Hardness
AISI 502 – 72 Hardness
AISI 410 – 86 Hardness
AISI 304 – 83 Hardness
AISI 316 – 83 Hardness
AISI 347 – 83 Hardness
Monel – 70 Hardness
Inconel 625 – 68 Hardness
F11 – 68 Hardness

Style 950

• Frequently referred to as oval ring

Style 951

• Octagonal section
• Better sealing performance than Style 950
• Recommended for new applications

Style 952 BX

• Square cross section with bevelled corners
• Designed for use only in flanges API 6BX
• Recommend for pressures from 5000 PSI to 20000 PSI

Style 953 RX

• Pressure activated gasket
• Shape is designed to use the fluid pressure to increase the sealability
• The outside sealing surface of the gasket makes the initial contact with the flange seating the gasket
• As internal pressure of the piping or equipment is increased, the contact pressure between the gasket and flanges also increase due to the shape of the gasket
• Resistant to vibrations, pressure surges and shocks that occur during oil well drilling
• RX is interchangeable with style 950 and 951, using the same flange grooving