What are the properties of phlogopite mica?

Phlogopite mica seals are suitable for extreme thermal applications, with a service temperature range from -200 to 1000 °C and a working pressure up to 60 bar. They are chemically resistant and are excellent for sealing in high-temperature environments such as furnace flue gases. Phlogopite mica offers high aging resistance and is particularly resilient against aggressive media.

Properties of Phlogopite Mica Gaskets (Frenzelit e.g. novamica® THERMEX)


Product Specification Gasket material with metal inserts
Material Phlogopite Mica
Color brownish, golden
Technical Properties
Operating Temperature -200 °C to 1000 °C / -328 °F to 1832 °F (depending on medium and application area)
Working Pressure up to 60 bar / 870 psi (higher is possible depending on medium and application area)
Physical and Chemical Properties
Physical Good aging resistance, maximum temperature resistance at high pressures
Chemical Very good chemical resistance, excellent for exhaust gases from furnaces, etc.
Portrait von Dirk Göttgens
Portrait von Dirk Göttgens

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