Ultramid® Nylon grades have a long history of protecting the insulation and conductors of THHN, THWN, THWN-2, TFN, and TFFN wire constructions in residential, commercial, and industrial settings. They're tough and flexible, shielding the conductor from abrasion in addition to providing critical resistance to gasoline, oil, and other hydrocarbons for building wire, power cable, fixture, and appliance wiring applications. These tested and proven wire jacket polymers were designed to provide you with excellent processing behavior as well as end-product performance while meeting high national standards. In fact, they meet ANSI/UL 1581: Reference Standard for Electrical Wires, Cables, and Flexible Cords and ANSI/UL 83: Thermoplastic-Insulated Wires and Cables standards and have a UL QMTT2 listing as a polymeric material for use in wire, cable, and flexible lighting products.