The API 6A RX Ring Joint Gasket, model RX 31, is a precision-engineered sealing component designed for use in high-pressure flange connections, specifically 3-inch 3000# (Class 3000) flanges. It conforms to the internationally recognized API 6A standard, ensuring high performance, safety, and reliability in some of the most demanding industrial sectors. These include upstream oil and gas operations, drilling systems, pressure control equipment, refineries, and chemical processing facilities where leak-tight metal-to-metal sealing is critical to operational integrity and environmental safety.
Constructed from carbon steel, this gasket offers robust mechanical strength and excellent resistance to deformation under pressure. With a Brinell hardness of 120HB, it maintains the right balance between hardness and ductility, allowing it to embed slightly into flange faces for superior sealing without causing surface damage. This makes it especially suitable for repeated make-and-break operations often encountered in field maintenance and system overhauls.
The RX series of ring joint gaskets are designed to enhance sealing performance through a pressure-energized mechanism. The RX profile includes a pressure-activated feature that increases gasket contact pressure as internal system pressure rises. This dynamic sealing capability ensures a tight, reliable seal even under extreme conditions, such as sudden pressure spikes or thermal cycling. The RX 31 is dimensioned precisely to fit the groove geometry of 3" 3000# flanges, ensuring a perfect match and optimum sealing efficiency.
To further improve its resistance to environmental and chemical degradation, the gasket is treated with a zinc coating. This coating acts as a sacrificial layer, protecting the carbon steel base material from corrosion, oxidation, and surface wear—especially valuable in offshore or corrosive service conditions. The zinc layer also enhances the gasket’s shelf life and performance stability over time.
Overall, the API 6A RX 31 Ring Joint Gasket is a high-integrity sealing solution tailored for mission-critical applications where failure is not an option. Its combination of material strength, engineered sealing geometry, and corrosion-resistant coating make it an ideal choice for engineers and operators seeking long-term reliability in high-pressure sealing systems.Know more about China Manufacturer
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