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Help CenterMetal Lens Gasket, No-hole and With-hole Lens Gasket, High-pressure Angle Valve Hydrogen Pipeline Flange Sealing Gasket Custom-made
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High-pressure ring joint gaskets are sealing elements widely used in high-pressure sealing applications, offering advantages such as sealing performance, corrosion resistance, wear resistance, high pressure tolerance, and long service life. Their unique spherical-conical line contact sealing mechanism, combined with radial self-tightening, enables them to exhibit excellent sealing performance under high-pressure operating conditions. The following is some key information regarding high-pressure ring joint gaskets: Structural Principle: The sealing structure a high-pressure ring joint gasket consists of the ring joint gasket, a threaded flange, and fasteners. Both sides of the ring joint gasket feature spherical sealing surfaces that mate with the20° conical surfaces at the pipe ends. Under the action of preload, the spherical surfaces and conical surfaces form a ring-line contact, which gradually expands into a ring- sealing surface as the pressure increases. Sealing Mechanism: Ring joint gasket sealing is a combination of forced sealing and self-tightening sealing. When the medium pressure acts, the joint gasket undergoes radial expansion, further enhancing the fit of the sealing surfaces and achieving a self-tightening effect. This dual sealing mechanism ensures reliability under high-pressure fluctuating operating. Production Technology and Testing Methods: High-pressure ring joint gaskets are typically made of metallic materials, including stainless steel, titanium alloys, and iron-based alloys. Their production mainly includes CNC machining and multiple polishing processes to ensure the flatness and smoothness of the sealing surfaces. Testing methods primarily include leak testing, friction testing, and torsional strength testing. Scope Application: The linear sealing technology of high-pressure ring joint gaskets is suitable for various high-pressure sealing applications, such as petrochemicals, aircraft, rockets, semiconductor manufacturing, laser, medical, and marine industries. Engineering Standards: In China, high-pressure ring joint gasket sealing mainly follows the JB/T2776-1992 " Joint Gasket" standard, recommending the use of materials such as 20 steel, 1Cr18Ni9Ti, 1Cr18Ni12MoTi, 0Cr17Mn13Mo2N, and 00Cr17Ni14Mo2. The international standard ASME B16.2 "Metallic Gaskets" is consistent with domestic standards in basic concepts, but differs in specific dimensions and tolerance requirements. Installation Process Control: During installation, the bolt preload must be precisely. Utilizing the self-aligning characteristics of the ring joint gasket, the axial misalignment of the pipeline must be ensured to be within the allowable range. Before installation, the sealing surfaces be thoroughly cleaned, and high-temperature anti-seize lubricant should be applied if necessary. Typical Application Cases: In urea and synthetic ammonia plants, ring joint gasket sealing is applied to high-pressure pipeline connections, particularly in small-diameter high-pressure pipelines, where its advantages of compact structure and lightweight are prominent. Failure Analysis and Handling: Common failures leakage, gasket crushing, and sealing surface damage. Preventive measures include regular inspection of the bolt preload status and establishing a complete maintenance record
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