Southwire® Viper® unlisted SOOW flexible cords are manufactured using bare flexible rope-stranded annealed copper conductors with a heat, moisture, ozone and oil resistant EPDM rubber insulation. The insulated conductors are cabled with paper fillers. A tissue-paper separator is wrapped around the assembly to promote easy removal of the jacket. A heat, moisture and oil resistant flexible CPE jacket is extruded over the assembly.