The P.T.F.E. seats are widely used in all the spectrum of the Ball Valves range and grant a timeless sealing performance due to the polymer characteristics (low antifriction coefficient, very good temperature resistance, low permeability and good resistance to chemical agents). 
The Italian partner of Dimas Makine is capable to produce multiple profile and shape seats (diameters up to 500 mm) with many different polymers and
compounds (Virgin P.T.F.E., T.F.M.®, glass, carbon, graphite, bronze, MoS2, inox steal compounds)