In high-pressure and high-temperature piping systems, IX Seal Rings and RTJ (Ring Type Joint) Gaskets are both used for metal-to-metal sealing. While they share a similar purpose, they have significant differences in design, sealing mechanism, and performance.

IX Seal Ring

Design and Shape

The IX Seal Ring has a self-energizing profile, which means it deforms under pressure to enhance the sealing effect. It is primarily used in compact flange systems such as those specified in ISO EN 27509 and API 6A. On the other hand, the RTJ Gasket is available in oval and octagonal shapes and relies on compression between flange grooves to form a seal. It is commonly used in ASME B16.5 and API 6A flanges.

Ring type joint gasket RTJ gasket

Sealing Mechanism and Performance

One of the key advantages of the IX Seal Ring is its pressure-activated sealing, which improves performance under extreme conditions and reduces the risk of leakage. In contrast, the RTJ Gasket provides a static metal-to-metal seal through bolt compression but does not have the self-energizing capability of the IX Seal Ring. Due to this, IX Seal Rings require less bolt load compared to RTJ Gaskets, making them more efficient in certain high-pressure applications.

The IX Seal Ring is designed to handle pressures up to 15,000 PSI, making it suitable for extreme environments like offshore and subsea applications. RTJ Gaskets, while still effective, are typically rated for pressures up to 10,000 PSI and are widely used in industries such as oil refining, petrochemicals, and pipeline systems.

Applications and Benefits

The IX Seal Ring is preferred in compact flange systems, which provide weight and space savings while maintaining high sealing integrity. This makes them ideal for offshore platforms, subsea systems, and high-pressure gas transmission. Meanwhile, the RTJ Gasket remains a popular choice in traditional high-pressure piping systems where standard flange designs are used.

Both IX Seal Rings and RTJ Gaskets play a crucial role in industrial sealing applications. However, the IX Seal Ring offers a more advanced, self-energizing sealing mechanism, making it more reliable for extreme pressure and temperature conditions. Haihao Group provides high-quality sealing solutions, including both IX Seal Rings and RTJ Gaskets, to meet the demands of various industries. Email:sales@haihaogroup.com