Overview
This industrial-grade spiral wound gasket is engineered for high-pressure sealing applications in critical piping and vessel systems. It conforms to the HG/T 20631-2009 standard, ensuring dimensional consistency and material quality for reliable performance. The gasket is constructed with alternating layers of metal windings and filler material, creating a resilient seal that compensates for flange irregularities and maintains integrity under thermal cycling and pressure fluctuations. Its primary function is to prevent leaks in bolted flange connections within chemical, petrochemical, power generation, and other process industries.
Key Features
Robust construction with a 304 stainless steel outer centering ring for precise alignment during installation Resilient sealing element combines 304 stainless steel windings with a flexible graphite filler Engineered for high-pressure service, rated for 900 LB class flanges
Excellent recovery and sealing performance under bolt load Conforms to the HG/T 20631-2009 industry standard for dimensional compliance
Specifications
Standards: HG Chemical Base: Graphite Sealant Type: Spiral Wound Gasket Indoor/Outdoor Use: Indoor Paintable: No Nominal Pipe Size: 6 Inch Pressure Class: 900 LB Construction: C2220 (304 Stainless Steel Outer Ring / 304 Stainless Steel Windings with Graphite Filler) Gasket Design: Style C with Outer Ring
Applications
Sealing high-pressure flanges in chemical and petrochemical processing plants
Connections in power generation and steam systems
General service in refineries and offshore platforms Piping systems for hydrocarbons, water, and select chemical services
Boiler feedwater and heat exchanger connections
This gasket is supplied as a package of two units. Proper installation requires clean, undamaged flange faces torqued to specified values for optimal seal performance. It is intended for indoor use in controlled environments.
