Overview
This 321 stainless steel spiral wound gasket is a precision sealing component engineered for high-pressure, high-temperature flange connections in critical process industries. Its robust spiral-wound construction combines the structural strength of metal with the sealing resilience of a non-metallic filler, creating a reliable seal that accommodates flange rotation and surface irregularities. Manufactured to recognized industrial standards, it is designed for long-term service in demanding chemical, petrochemical, and power generation applications.
Key Features
Constructed with a 321 stainless steel outer winding for excellent high-temperature strength and oxidation resistance
Features a fluoropolymer filler layer for superior chemical resistance against a wide range of corrosive media
Engineered sealing design accommodates system pressure fluctuations and minor flange misalignment
Robust construction ensures durability for repeated use in both indoor and outdoor installations Pre-formed to exact dimensions for a precise fit, ensuring proper seating and optimal seal performance
Specifications
Standard: HG/T20610-2009 Nominal Size: DN65 Inside Diameter: 3.75 inches Outside Diameter: 4.29 inches Thickness: 0.13 inches Metal Windings: 321 Stainless Steel Filler Material: Fluoropolymer Pressure Rating: PN10, PN16, PN25, PN40, PN63 (PN40 approximates 580 PSI) Temperature Rating: Up to 500°F (continuous service) Package Quantity: 20 gaskets
Applications
Sealing flanges in chemical processing and hydrocarbon pipeline systems Isolating connections on valves, pumps, heat exchangers, and reactor vessels
Maintaining seal integrity in power generation and industrial boiler applications Use in refineries and offshore platforms for critical pressure-containing joints
