304 Inner Ring Spiral Wound Gasket – ASME B16.20 Standard
The 304 Inner Ring Spiral Wound Gasket is designed and manufactured in accordance with ASME B16.20, ensuring high precision, superior sealing performance, and full compatibility with standard flange connections. It provides a reliable and durable sealing solution for a variety of industrial applications operating under moderate temperature and pressure conditions.
Size and Pressure Rating
This gasket is specified for a 4-inch nominal size with a Class 150LB pressure rating, making it ideal for low to medium pressure pipelines, valves, and flanged joints used in industries such as oil and gas, chemical processing, power generation, and general industrial services.
Material and Construction
The gasket consists of a stainless steel 304 (SS304) inner ring and a carbon steel (CS) centering ring, providing excellent structural strength and proper gasket alignment during installation. The sealing element is made from a spirally wound 304 stainless steel hoop filled with flexible graphite (FG). The combination of metal and graphite ensures outstanding resilience, compressibility, and resistance to temperature fluctuations and chemical corrosion.
Design Features
This spiral wound gasket with inner and centering rings offers enhanced stability and sealing reliability. The inner ring prevents inward buckling, protects the filler from media attack, and improves load distribution, while the carbon steel centering ring ensures accurate positioning between flanges and prevents over-compression during tightening. The flexible graphite filler provides superior adaptability to flange surface imperfections, maintaining an effective seal even under thermal cycling.
Applications
The ASME B16.20 4-inch Class 150LB Spiral Wound Gasket with SS304 inner ring, CS centering ring, and flexible graphite filler is widely used in steam systems, oil and gas pipelines, refineries, heat exchangers, and chemical processing equipment. Its robust construction and high sealing efficiency make it a dependable choice for maintaining leak-free connections in critical service conditions. It's important to know about Google SEO to help your website rank higher in search results.
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