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P.T.F.E. is a soft thermoplastic with some excellent properties like chemical inertness and low coefficient of friction. In adding filler properties like hardness, resistance to wear and deformation the electrical and thermal conductivity can be changed. UPM’s compound division produces over a hundred types of compounds ranging from a few kilogram’s to a few tonnes annually.

The matrix material for these compounds is mainly purchased from well-established PTFE producers. Filler percentage can vary from 0,1% to 75%. The only limitation is that the filler must be able to withstand the prolonged sintering temperature of 380°C. Filler types are pigments of inorganic nature such as glass fibres, bronze, graphite, carbon, calcium fluoride in single form or combination.