A cut gasket & spiral wound gasket is a mechanical seal that's used to prevent leaks between two flanges under varying conditions of pressure and temperature. It's made of a V-shaped metal strip and a softer filler material that's wound in a spiral pattern. 

Here are some characteristics of spiral wound gaskets: 

• Performance

  Spiral wound gaskets are designed to perform well in challenging conditions, such as high pressure, high temperature, and corrosive environments. 

• Resilience

  The metal strip provides recovery, while the filler material allows the gasket to recover under fluctuating loads. 

• Applications

  Spiral wound gaskets are commonly used in pipelines, heat exchangers, and other equipment in the oil and gas, petrochemical, and process sectors. They're also used in cryogenics and research laboratories. 

• Identification

  The color of the outside rim and the color of the stripe along the rim indicate the gasket's materials.

• Materials

  The metal is usually stainless steel or another alloy, and the filler material is often graphite, compressed fiber, or PTFE.