Overview
This industrial-grade spiral wound gasket is engineered for high-integrity sealing in demanding piping and pressure vessel applications. Manufactured in strict compliance with the HG/T 20631-2009 standard, it is designed for reliable performance in 300 LB class service. The gasket's construction combines the mechanical strength of metal with the sealing resilience of a non-metallic filler, creating a robust seal capable of withstanding high bolt loads, thermal cycling, and system pressure fluctuations. It is suitable for a broad range of industrial fluids and gases.
Key Features
Engineered to the HG/T 20631-2009 industry standard for dimensional consistency and performance. Core winding of 316 stainless steel provides excellent corrosion resistance and structural integrity. Fluoropolymer filler layer offers superior chemical resistance and stability across a wide temperature spectrum. The spiral wound design allows for controlled compression and superior recovery under variable loads. Suitable for both indoor and outdoor installation in permanent industrial settings.
Specifications
Standard: HG/T 20631-2009 Nominal Pipe Size: DN200 Inner Ring Material: 316 Stainless Steel Winding Material: 316 Stainless Steel Filler Material: Fluoropolymer Pressure Class: 300 LB Approximate Inside Diameter: 9.38 inches Approximate Outside Diameter: 10.63 inches Thickness: 0.18 inches Chemical Base: Fluoropolymer Sealant Type: Gasket Indoor/Outdoor Use: Both Paintable: No Package Quantity: 2 gaskets
Applications
Sealing flanged connections in chemical and petrochemical processing pipelines. High-pressure steam and utility systems in power generation facilities. Heat exchanger, valve, and pump connections across various industrial plants. Applications involving hydrocarbons, solvents, and other aggressive media where chemical resistance is critical. General service in refineries, pulp and paper mills, and water treatment facilities.
