Overview
This D-type spiral wound flange gasket is engineered for high-pressure sealing in critical industrial piping systems. It is constructed with a spiral wound design featuring inner and outer containment rings, which work together to provide a robust, leak-tight seal capable of withstanding significant pressure, thermal cycling, and mechanical stress. Manufactured to conform with the HG/T20610-2009 standard, this gasket is a reliable component for maintaining system integrity in demanding process environments.
Key Features
D-type spiral wound construction with inner and outer containment rings Pressure rating of PN25, suitable for applications up to 363 PSI Center ring and windings constructed from Stainless Steel 304 for corrosion resistance
Filler material of flexible graphite for effective sealing across a wide temperature range Outer containment ring of Stainless Steel 304 provides blow-out resistance Engineered to meet the dimensional and material specifications of HG/T20610-2009
Packaged in convenient quantities for efficient inventory and job planning
Specifications
Material (Windings/Center Ring): Stainless Steel 304 Material (Filler): Flexible Graphite Material (Outer Ring): Stainless Steel 304 Nominal Size: DN80 Actual Size: 3.15 inches Pressure Class: PN25 (363 PSI) Design Standard: HG/T20610-2009 Gasket Type: D2222 Spiral Wound with Inner and Outer Rings Connection Type: Flange Package Quantity: 10 pieces
Applications
Sealing connections in chemical and petrochemical processing pipelines High-pressure steam and utility lines
Refinery and power generation flange connections General industrial service on raised face flanges where a resilient, high-integrity seal is required
