Overview
This 18-inch nominal diameter spiral wound gasket is engineered for high-pressure, high-temperature sealing in critical piping and vessel flanged connections. It is constructed to deliver a reliable, leak-tight seal in demanding service environments common to chemical processing, petrochemical, power generation, and oil and gas applications. The gasket features a robust metal winding with a resilient filler and an integrated outer ring, ensuring proper installation and long-term performance under fluctuating pressures and thermal cycles.
Key Features
Engineered for high-pressure service up to 360 PSI (PN25) C-shaped winding profile for optimal sealing force distribution Temperature-resistant graphite filler for service up to 900°F in oxidizing atmospheres 304 stainless steel inner and outer windings for corrosion resistance Integral outer containment ring (C2220 style) for correct gasket centering The outer ring prevents over-compression and gasket blow-out Manufactured to precise industry standards for dimensional consistency Suitable for use on raised face and flat face flanges
Specifications
Nominal Size: 18 inches Pressure Rating: 360 PSI (PN25) Construction Standard: HG/T20610-2009 Gasket Style: C2220 (with outer centering ring) Winding Metal: 304 Stainless Steel Filler Material: Flexible Graphite Winding Cross-Section: C-Shape Intended Use: Indoor and Outdoor Unit of Measure: Each Package Quantity: 2
Applications
Sealing flanged connections in chemical and petrochemical processing plants High-pressure steam lines and boiler feed systems in power generation Piping manifolds, heat exchangers, and pressure vessels in refineries Compressed air and process gas lines in industrial facilities General industrial maintenance for ANSI Class 150 and 300 flanges
