Overview
This spiral wound gasket is engineered for high-pressure, high-integrity sealing in critical industrial flange connections. It is manufactured in strict compliance with the HG/T 20631-2009 standard, ensuring dimensional consistency and performance reliability for demanding applications. The gasket's robust construction is specifically designed to handle the mechanical stress and thermal cycling common in process piping and pressure vessel systems rated for 900LB service.
Key Features
Engineered for high-pressure service up to 900LB flange ratings Constructed with a durable 304 stainless steel outer centering ring for precise alignment and mechanical protection Sealing core features alternating windings of 304 stainless steel and PTFE (polytetrafluoroethylene) filler
PTFE filler provides excellent resistance to a wide range of corrosive chemicals and solvents
The spiral wound design offers superior resilience and sealing force under bolt load Outer ring prevents over-compression and gasket blow-out Suitable for a wide temperature range based on the 304 stainless steel and PTFE material combination
Specifications
System of Measurement: Imperial Material Grade/Class: 304
Material
Stainless Steel + PTFE Thread Size: Not Applicable Finish: Not Applicable Shaft/Bore Diameter: 13.75 inches Thickness: Not Specified Nominal Pipe Size: 13.75 inches (DN350 equivalent) Pressure Class: 900LB Construction: Style B with Inner Ring (304 Stainless Steel / PTFE Filler / 304 Stainless Steel Outer Ring) Industry Standard: HG/T 20631-2009 Package Quantity: 2 gaskets
Applications
Sealing flanges in high-pressure chemical and petrochemical processing pipelines Connections on reactors, columns, and heat exchangers in refinery service
Utility and process steam lines within power generation facilities
Critical sealing points in pharmaceutical and food processing equipment where cleanliness and chemical resistance are required General industrial piping systems requiring a reliable, resilient seal for demanding conditions
