Group M compounds

Commercial names: Kalrez (Du Pont), Parafluour (Parker).
The principal characteristic of this type of elastomer is the ability to maintain its chemical-physical characteristics at very high temperatures (circa 300°C), even in contact with aggressive fluids or in vacuum seal applications. Its fluorine content limits its use at low temperatures, which cause fragility and loss of elastic memory.
In practice it can be observed that the only fluids that cause deterioration of the compound are those containing fluorine.

Temperature table

Fluid compatibility table

The Elastotech code for this compound is: ME17XX/YY.