For applications requiring gasket sheets capable of withstanding temperatures up to 250°C (482°F), materials with higher temperature resistance are necessary. Here are some common gasket sheet materials suitable for temperatures up to 250°C:

1. Graphite:

   • Graphite gasket sheets offer excellent thermal stability and can withstand temperatures up to 250°C due to graphite’s high thermal conductivity and resistance to oxidation. These sheets are commonly used in high-temperature sealing applications such as in steam systems, chemical processing, and refineries.

2. Non-asbestos Fibers (e.g., Aramid, Fiberglass, Carbon):

   • Some high-performance non-asbestos fiber materials, such as aramid, fiberglass, and carbon, can handle temperatures up to 250°C. These materials offer good mechanical strength and thermal stability, making them suitable for various industrial sealing applications.

3. PTFE (Polytetrafluoroethylene):

   • PTFE gasket sheets, including expanded PTFE, can typically handle temperatures up to 250°C without losing their sealing properties. PTFE is chemically inert and resistant to a wide range of fluids, making it suitable for high-temperature and corrosive environments.

4. Mica:

   • Mica gasket sheets can withstand temperatures up to 250°C due to mica’s excellent thermal insulation and resistance to high temperatures. These sheets are commonly used in electrical and thermal insulation applications, as well as in high-temperature sealing applications.

5. Ceramic Fiber:

   • Ceramic fiber gasket sheets offer excellent thermal stability and can handle temperatures up to 250°C. These sheets are commonly used in high-temperature sealing applications such as in furnaces, kilns, and exhaust systems.

When selecting gasket sheets for temperatures up to 250°C, it’s essential to consider factors such as pressure, chemical compatibility, surface roughness, and specific application requirements to ensure optimal performance and sealing effectiveness. Additionally, different grades and formulations of these materials may offer varying temperature capabilities and other properties, so consulting with a gasket manufacturer or supplier can help in choosing the right material for your needs.