In the demanding world of industrial piping and pressure systems, selecting the right sealing solution is critical for safety, efficiency, and compliance. For high-pressure, high-temperature applications, the ASME B16.20 Spiral Wound Gasket stands as a benchmark for reliability. This article delves into the specifics of a 4 Inch Class 300 Raised Face Spiral Wound Gasket made from SS321 (Stainless Steel 321), explaining its features, applications, and why it's a preferred choice for engineers.