... -180C~+260C and a wax-like surface. Filled Teflon graphite rod has the lowest coefficient of friction ... of all known solid materials. Filled Teflon bar has the best electrical properties of all ... plastic. Use of teflon Rod: The electrical insulation used under various ... 14.0Ultimate Elongation%≥ 150Dia. ( mm )20, 25, 30, 40, 55, 60, 65, 70, 75, 80 85, 90, ...