... good electrical property, chemical resistance,weather resistance, non-stick performance. PTFE (teflon) tubings has good electrical property, chemical resistance,weather resistance, non ... wallThicknessProof voltage at 50HZInsulation resistanceAt roomtemperatrueAtmaximumOperationtemperatureUndernormalConditionMmVVMo0.250.300.400.503000400050006000200030004000500010000 PTFE (teflon) tube