Overview
The 304 Stainless Steel Spiral Wound Gasket is a high-performance sealing solution engineered for critical flanged connections in demanding industrial service. This 4-inch, 600 PSI gasket is constructed to the exacting requirements of the HG/T 20631-2009 standard, ensuring dimensional consistency and reliable performance in chemical, petrochemical, and high-pressure utility applications. Its D-shaped design incorporates both inner and outer reinforcing rings, providing exceptional stability, improved alignment during assembly, and superior containment of the sealing element under fluctuating pressures and temperatures.
Key Features
D-shaped construction with inner and outer centering rings for optimal alignment and bolt load distribution Winding core of flexible graphite filler for excellent conformability and seal integrity Outer winding and rings fabricated from 304 stainless steel for corrosion resistance Engineered for services involving thermal cycling and variable pressure conditions Suitable for use in both controlled indoor and harsh outdoor environments Manufactured to precise HG industry standards for guaranteed interchangeability
Specifications
Nominal Pipe Size: 4 Inch Pressure Class: 600 PSI Gasket Type: Spiral Wound with Inner and Outer Rings Winding Material: 304 Stainless Steel Filler Material: Flexible Graphite Reinforcing Ring Material: 304 Stainless Steel Applicable Standard: HG/T 20631-2009 Style Code: D2222 Paintable: No Package Quantity: 36
Applications
Sealing flanged connections in chemical processing and transportation pipelines High-pressure steam and utility lines Refinery and petrochemical plant maintenance Boiler feedwater and heat exchanger systems General industrial service for oils, gases, and many chemical media
