Automotive Wire Harness Tape 0.25mm Flame Retardant for EV Battery Packs High voltage harnesses in a battery pack need a wrap that will not feed a fire and will not fog the module cover with outgassing. This 0.25 mm flame retardant PET tape is built for that job, with a halogen free acrylic adhesive system rated to UL94 V-0. Orange backing is stocked for high voltage identification per OEM convention, and black is used for the low voltage branch harnesses inside the same pack