Overview
The Type B Spiral Wound Gasket is a high-performance sealing solution designed for critical service in piping and pressure vessel flanges. Manufactured to the HG/T 20631-2009 standard, this gasket is engineered to deliver reliable, leak-free containment in high-pressure and high-temperature applications. Its robust construction ensures long-term stability and resistance to thermal cycling, making it an essential component for maintaining system integrity in demanding industrial environments.
Key Features
Engineered for high-pressure service up to 300LB ratings Constructed with a spiral wound core of 316L stainless steel for superior corrosion resistance
Resilient graphite filler provides excellent sealing and thermal conductivity
Integral internal centering ring ensures precise and secure alignment on the flange Consistent 0.177-inch thickness for uniform bolt loading and a reliable seal Suitable for a wide range of industrial media, including steam, hydrocarbons, and chemicals
Specifications
System of Measurement: Imperial Material Grade/Class: 316L Stainless Steel Gasket Type: Type B (with Inner Ring) Nominal Pipe Size: 4 inch Bore Diameter: 4.19 inches Thickness: 0.177 inches Pressure Class: 300LB Filler Material: Flexible Graphite Winding Material: 316L Stainless Steel Pack Quantity: 10
Applications
Sealing for ANSI standard raised face flanges in chemical processing High-pressure steam lines in power generation facilities
Piping systems in oil and gas production and refining Heat exchangers, valves, pumps, and vessel manways Any application requiring a robust, metallic gasket for critical sealing
