Excellent dielectric properties, resistance to high voltage ; excellent corrosion resistance, almost insoluble in any solvent , in aqua regia acid and alkali concentration of light sodium oxide , strong corrosive uranium pentafluoride are not corrupted ; wear resistance coefficient of static friction is the smallest plastic , self-lubricating performance, there are outstanding non-stick surfaces ; good tensile strength . Widely used in aerospace , instrumentation , medical and pharmaceutical , electronics , telecommunications , petrochemicals, metallurgy electricity , household appliances , lighting and so on.