excellent corrosion-resistance,aging-resistance,high,low-temperature-resistance,good lubrication and insulation, ... with dielectric constant 10Kv/mmHigh temperature resistance:good low,high temperature resistance,continuous working among 240c--260c;stable ... thermo performance,non-embrittlement under 0c,non-melting under high temperature.Lubrication and friction-resistance:low friction coefficient, ...