Shape: Octagonal cross-section (Ring Joint)
Material Options: Soft iron, low-carbon steel, 304/316 stainless steel, Cr-Mo steel (F5, F11, F22), Monel, Inconel 600/718
Temperature Range: -200°C to +650°C (up to 800°C for stainless steel)
Pressure Range: Up to 15,000 psi (1,034 bar) or higher, suitable for ultra-high pressure applications
Standards Compliance: ASME B16.20, EN 1092-1
Sealing Type: Line contact, self-tightening
Applications: Oil & gas, petrochemical, power generation, heavy industrial vessels and pipelines
Customization: Available per flange type (RX/BX groove), material, and dimensional requirements
Certification: Material traceability reports (MTR) and third-party testing optional
Metal octagonal gaskets, also known as ring joint (RJ) gaskets, are engineered for high-pressure and high-temperature sealing applications. They are widely used in pipelines, valves, and pressure vessels in oil, gas, petrochemical, and power industries. The octagonal cross-section provides line contact sealing, delivering self-tightening performance under pressure, ensuring zero leakage even in extreme operating conditions.
Line Contact Design: Self-tightening under system pressure; radial expansion increases sealing reliability with rising pressure.
High Preload Efficiency: Ensures consistent sealing even under fluctuating pressures and thermal cycles.
Forged Metal Construction: Free of internal stress defects, excellent creep and relaxation resistance.
Temperature & Pressure Durability: Maintains performance under severe temperature swings and high-pressure environments.
Standard and Specialty Metals: Soft iron, low-carbon steel, stainless steel (304/316), chromium-molybdenum steel (F5/F11/F22), nickel alloys (Inconel 600/718), and Monel.
Tailored to Corrosive & High-Temperature Conditions: Provides optimal material selection for specific environments.
Designed for ASME B16.20 ring joint flanges.
Suitable for API 6A, ANSI Class 1500+, and nuclear or supercritical power plant applications.
CNC machined for precise dimensions, meeting ASME B16.20, EN 1092-1 standards.
Supports material traceability (MTR) and third-party certification for critical industry requirements.
Wellhead equipment, Christmas trees, high-pressure pipelines, compressors, LNG facilities.
Hydrocrackers, high-pressure heat exchangers, ammonia synthesis units, high-temperature and high-pressure valves and pipelines.
Ultra-supercritical thermal power plants, nuclear power plants (nuclear safety shells, main steam systems).
High-pressure vessels, experimental devices, and extreme flange connections where conventional gaskets fail.
The octagonal cross-section ensures that the gasket tightens as system pressure rises, maintaining a leak-free seal.
Extensive range of metals, from standard stainless steel to nickel-based alloys, for corrosion, high temperature, and high-pressure applications.
CNC-machined to exact tolerances, ensuring perfect fit for ring joint flanges and compliance with international standards.
Forged construction minimizes creep and relaxation, extending service life and reducing maintenance in critical applications.
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