Overview
This 4-inch spiral wound gasket is engineered for high-performance sealing in demanding industrial piping and pressure vessel systems. Designed specifically for 150 LB flanges, it creates a reliable, leak-tight seal capable of withstanding significant pressure, temperature fluctuations, and a wide range of chemical media. Manufactured in compliance with the HG/T 20631-2009 standard, this gasket ensures dimensional consistency and material integrity for predictable performance in critical applications. Its robust construction is intended for professional use in controlled environments.
Key Features
Engineered for 150 LB pressure class flanges, ensuring proper fit and sealing force. Constructed with a 304 stainless steel winding for excellent corrosion resistance and mechanical strength. Features a graphite filler offering superior thermal stability and resilience across a wide temperature range. Includes a sturdy 304 stainless steel outer ring (C2220 configuration) for precise centering during installation. The outer ring prevents gasket blow-out and protects against over-compression, extending service life. Provides reliable chemical resistance suitable for many industrial process fluids. Manufactured to precise HG standards for guaranteed interchangeability and compliance.
Specifications
Sealant Type: Spiral Wound Gasket Nominal Size: 4 Inch (DN40) Pressure Class: 150 LB Construction: C2220 (With Outer Ring) Winding Material: 304 Stainless Steel Filler Material: Graphite Outer Ring Material: 304 Stainless Steel Applicable Standard: HG/T 20631-2009 Intended Use: Indoor Surface Compatibility: Non-paintable Package Quantity: 36
Applications
Sealing flanges in chemical and petrochemical processing pipelines. General industrial plumbing and high-pressure hydraulic systems. Power generation and thermal utility systems. Oil and gas transmission and refining applications. Heating, ventilation, and industrial boiler systems. Use on pumps, valves, heat exchangers, and vessel manways.
