A spiral wound gasket is a type of high-performance sealing element designed for use in critical flange connections, especially in high-pressure and high-temperature applications. It consists of a thin metal strip (usually stainless steel) wound in a spiral with a soft filler material such as graphite, PTFE, or mica layered between the metal windings. This combination provides both the structural strength of metal and the sealing flexibility of the filler material. Spiral wound gaskets are widely used in industries such as oil and gas, petrochemical, power generation, and chemical processing, where reliable sealing under varying pressure and temperature conditions is essential. These gaskets are typically used with raised face (RF), flat face (FF), or ring-type joint (RTJ) flanges. Often fitted with inner and/or outer rings to center the gasket and enhance blowout resistance, spiral wound gaskets offer excellent resistance to chemical corrosion, thermal cycling, and flange movement. Their ability to maintain a tight seal under fluctuating conditions makes them ideal for critical systems handling steam, hydrocarbons, and other aggressive fluids.