These requirements are for use in the investigation of polytetrafluoroethylene plastic in the form of
tape with a minimum width of 1/2 inch (12.7 mm), or in the form of cord, where the product is intended to make threaded metal pipe joints tight against leakage. These products are evaluated when applied in accordance with the manufacturer’s instructions, to male threads of metal pipe assemblies. The products are rated for use in equipment intended to handle gasoline,gasoline/ethanol blends, diesel fuel,biodiesel/diesel fuel, biodiesel, naphtha, benzene,kerosene, petroleum oils, natural gas, propane,or butane as specified by the manufacturer.