Patco 85 PVC Cold Weather Electrical Tape is used for electrical insulation and sealing in cold weather; for busbar insulation; and for waterproofing. It offers greater thickness & conformability and is extremely flexible in cold weather and is flame retardant. Patco 85 also meets Federal Specification MIL-I-24391B and the UL 510 standard. It conforms snugly, adheres readily under any weather conditions, and is suitable for use up to 11.000V dry or wet.