Overview
This B-Type spiral wound gasket is engineered for high-integrity sealing in demanding industrial piping and flange connections. It features a robust construction with a stainless steel 304 inner ring and spiral windings filled with flexible graphite, creating a reliable seal capable of withstanding significant pressure and thermal cycling. The gasket is manufactured to the HG/T20610-2009 standard, ensuring dimensional consistency and performance for nominal pipe size 1 inch (DN25) applications across a wide range of pressure classes.
Key Features
B-Type design with a dedicated stainless steel inner ring for enhanced stability and compression control Spiral wound construction with alternating layers of 304 stainless steel and flexible graphite filler Engineered for multiple pressure classes from 150 PSI to 2500 PSI service Superior sealing performance in high-temperature and high-pressure cycling conditions Metal-on-metal contact design provides a robust mechanical stop and prevents over-compression
Flexible graphite filler offers excellent conformability and chemical resistance for a tight seal
Specifications
Material: Stainless Steel 304 Finish: None Size: 1.34 inches by 1.69 inches by 2.24 inches by 0.13 inches (ID x Inner Ring OD x OD x Thickness) Load Capacity: Non-standard Hole Diameter: 1.0 inch Head Type: B-type with inner ring Nominal Pipe Size: 1 inch (DN25) Pressure Class Ratings: PN16/PN25/PN40/PN63/PN100/PN160 (Approx. 150 PSI to 2500 PSI) Construction: 304 Stainless Steel + Graphite + 304 Stainless Steel Standard: HG/T20610-2009 Package Quantity: 50 pieces
Applications
High-pressure process piping in chemical and petrochemical plants
Refinery and offshore oil and gas flange connections
Power generation and thermal utility systems
Industrial boilers and heat exchangers Any application requiring a resilient, high-performance seal for ANSI standard flanges
