How many degrees of high temperature does Teflon have?

Update:26 Jan 2019
Summary:

Teflon has been working for 260 degrees and instantaneo […]

Teflon has been working for 260 degrees and instantaneous temperature can reach 400 degrees.

Teflon is
A special characteristic is: high temperature resistance, wear resistance, self-lubrication (very low friction coefficient)
The chemical properties are: special plastics resistant to corrosion and strong acid and alkali, capable of withstanding all kinds of strong acids (including aqua regia) and strong oxidants except molten alkali metal, fluorinated medium and sodium hydroxide above 300 °C.
The role of reducing agent and various organic solvents, the chemical name is polytetrafluoroethylene (PTFE).