What is the upper temperature of Teflon?

Teflon, or polytetrafluoroethylene (PTFE), can typically withstand temperatures up to about 260°C (500°F) before it begins to degrade. Beyond this temperature, it may start to release toxic fumes and lose its non-stick properties. However, for shorter periods, it can tolerate slightly higher temperatures, but prolonged exposure should be avoided to maintain its integrity and safety.