Overview
This industrial-grade spiral wound gasket is engineered for high-performance sealing in demanding flanged connections. Designed to the HG/T 20631-2009 standard, it provides a reliable, leak-tight seal for a wide range of services. The construction combines the mechanical strength of 304 stainless steel with the superior chemical resistance of a PTFE (polytetrafluoroethylene) filler, making it a versatile solution for challenging process environments. Each unit is precisely manufactured to ensure consistent compression and sealing integrity under specified load conditions.
Key Features
Robust 304 stainless steel inner and outer winding rings for structural stability and seating. PTFE filler material offering exceptional resistance to a broad spectrum of chemicals and corrosives. Manufactured to precise HG/T 20631-2009 industry standards for dimensional consistency and performance. Suitable for both indoor and outdoor installation in controlled environments. Non-asbestos construction ensures a safer, environmentally conscious sealing solution. Provides a reliable seal in applications involving thermal cycling and variable pressures.
Specifications
Standard: HG/T 20631-2009 Nominal Pipe Size: 1/2 Inch Pressure Class: 150LB Gasket Type: Spiral Wound with Inner Ring Windings: 304 Stainless Steel Filler Material: PTFE (Polytetrafluoroethylene) Inner/Outer Ring: 304 Stainless Steel Paintable: No Indoor/Outdoor Use: Both Pack Quantity: 100
Applications
Sealing flanged connections in chemical and petrochemical processing systems. Piping systems handling corrosive fluids, solvents, and aggressive media. General industrial service for steam, water, and gas lines within its pressure and temperature ratings. Refinery and power generation maintenance and operations. Food and pharmaceutical processing where chemical inertness is required.








