Overview
The DN300 Flange Gasket is a high-performance sealing solution engineered for demanding industrial pipeline and pressure vessel applications. Its spiral-wound metal construction is specifically designed to create a reliable, leak-tight seal in high-pressure and high-temperature environments, accommodating both thermal expansion and mechanical flange movement. This gasket is ideal for critical sealing points in systems where safety and integrity are paramount.
Key Features
Spiral-wound design for superior resilience and sealing performance
Constructed with a carbon steel outer ring for structural integrity Features a 304 stainless steel inner ring for corrosion resistance
Centered graphite filler provides excellent thermal conductivity and seal recovery
Engineered to withstand significant pressure fluctuations and thermal cycling
Conforms to recognized international gasket manufacturing standards
Package includes two gaskets for efficient installation or maintenance backup
Specifications
Material Construction: Carbon Steel Outer Ring, 304 Stainless Steel Inner Ring, Graphite Filler Nominal Size: DN300 (12-inch nominal pipe size) Pressure Rating: PN40, suitable for operating pressures up to approximately 580 PSI Design Standard: Manufactured to GB/T4622.2-2003 specifications Connection Type: Flange Gasket Product Type: Spiral Wound Gasket with Inner and Outer Guide Rings Package Quantity: 2 Gaskets
Applications
High-pressure process piping in chemical and petrochemical plants
Boiler and steam system connections
Heat exchanger and pressure vessel flanges
Refinery and power generation infrastructure General industrial piping requiring ANSI Class 300 or equivalent flange ratings








