PEI is almost as temperature-resistant as Teflon and can withstand continuous loads of up to 250°C. Thanks to its good mechanical properties and high lubricity, it is often used as a technical material for gear wheels or plain bearings in temperature-stressed environments. It has high dimensional stability, good mechanical strength, is extremely flame-retardant, low-smoke in the event of fire and achieves the highest flame-retardant rating according to all current standards.

PES is an amorphous high-performance plastic with a slightly brownish transparency. Due to its chemical relationship to PSU, PES has similar properties. Like PSU, PES has a significantly higher rigidity and strength compared to other transparent thermoplastics, especially at elevated temperatures. PES has better fire behaviour than the related PSU. The class “flame retardant VO” is already achieved with a lower sample thickness.

LCPs are polymers whose chains form so-called liquid crystalline phases in the melt. In crystals there is generally a fixed order, whereas in liquids/melts the distribution of molecules or atoms is usually largely random. LCPs are resistant to hydrolysis, weak acids and bases, alcohols, aromatics, chlorinated hydrocarbons, esters, ketones and all chemicals that would otherwise cause stress cracking, with the exception of strongly oxidising acids and strong alkalis, over a wide temperature range. The weathering stability and resistance to gamma rays and short waves are good. They are inherently flame-retardant (V0 according to UL 94) and have very good electrical properties – with the exception of low tracking resistance.