What material is often used for gaskets in high-temperature applications?

Graphite is commonly used for gaskets in high-temperature applications due to its excellent thermal stability and ability to maintain structural integrity under extreme conditions. Unlike rubber, which may degrade at high temperatures, graphite can withstand continuous temperatures that exceed 500°F (260°C) and even higher for short periods. Its properties allow it to compress effectively and create a reliable seal, which is critical in environments like those found in engines and industrial machinery.

Additionally, graphite gaskets are chemically resistant and can handle various fluids without degrading, making them suitable for diverse applications. While other materials like rubber, plastic, and cardboard may be used for specific situations, they typically lack the necessary heat resistance and durability that graphite offers in high-temperature scenarios. Thus, graphite stands out as the preferred choice for ensuring effective sealing under challenging thermal conditions.