Overview
Engineered for critical sealing in high-pressure and high-temperature pipeline systems, this spiral wound gasket delivers reliable performance in demanding industrial environments. It is constructed to the exacting requirements of the HG/T 20631-2009 standard, ensuring dimensional consistency and material integrity for flange connections. The unique design incorporates both an outer and inner reinforcing ring, providing exceptional mechanical strength and preventing gasket blow-out under extreme pressure cycling. This gasket is the preferred solution for creating a leak-tight seal in chemical processing, petrochemical, and power generation applications where system integrity is paramount.
Key Features
Robust 304 stainless steel inner and outer rings for maximum structural stability and crush resistance Spiral winding filled with pure PTFE (Polytetrafluoroethylene) offering superior chemical inertness Specifically designed for 900-pound class flange connections, handling high pressure and temperature D-style configuration with centering ring ensures perfect alignment during installation, preventing internal bore restriction Meets industry standard HG/T 20631-2009 for guaranteed dimensional accuracy and material compliance
Specifications
Material Grade/Class: 304 Material Construction: 304 Stainless Steel + PTFE Filler Shaft/Bore Diameter: 0.81 inches Overall Thickness: 0.177 inches Pressure Class Rating: 900LB Relevant Standard: HG/T 20631-2009 Pack Quantity: 36
Applications
Sealing high-pressure flanges in chemical and petrochemical processing pipelines
Connections in power plant steam and feedwater systems
General industrial piping for aggressive media where PTFE chemical resistance is required
Refinery and offshore oil and gas production equipment Any ANSI/ASME B16.5 standard flange connection requiring a 900LB class spiral wound gasket
