Overview
This industrial-grade spiral wound gasket is engineered for high-integrity sealing on critical pipe flange connections. It conforms to the stringent HG/T20610-2009 standard, ensuring dimensional accuracy and material quality for reliable performance in demanding process environments. Designed for a nominal pipe size of 10 inches (DN250) and a pressure rating of 300 PSI (PN40), this gasket provides a robust seal capable of withstanding significant mechanical stress and thermal cycling. Its specialized metal-and-filler construction is the preferred solution for sealing flanges in chemical processing, power generation, and oil and gas applications where leak prevention is paramount.
Key Features
C-shaped spiral wound construction with an integral outer centering ring Primary sealing elements made from Type 304 stainless steel Filler material composed of high-purity PTFE (polytetrafluoroethylene) Engineered to meet HG/T20610-2009 dimensional and material specifications Outer ring ensures proper alignment during flange assembly, preventing blow-out
PTFE filler provides excellent chemical resistance and a wide sealing range
Suitable for use on both raised face and flat face flanges as per standard
Specifications
Standard: HG/T20610-2009 Gasket Type: Spiral Wound, Style C with Outer Ring Nominal Size: 10 Inch (DN250) Pressure Class: 300 PSI (PN40) Material Designation: C2230 (304/PTFE/304) Metal Windings: Type 304 Stainless Steel Filler Material: PTFE Outer Ring Material: Type 304 Stainless Steel Temperature Range: Compatible with PTFE filler limits, typically from -450°F to +500°F Chemical Base: PTFE Sealant Type: Gasket Indoor/Outdoor Use: Both Paintable: No Package Quantity: 2
Applications
Sealing high-pressure flanges in chemical and petrochemical processing plants Connections in pharmaceutical and food processing equipment requiring non-contaminating seals
Utility and power plant piping systems
Water and wastewater treatment facility piping General industrial process piping where chemical resistance is required
