3M Filament Reinforced Electrical Tape 1039 is a 7 mil thick, solvent resistant, electrical filament tape that has a polyester film/glass filament scrim backing and a chemical resistant, acrylic adhesive. The tape is 600V rated and withstands a temperature range of 40 to 266 °F ( 40 to 130 °C).3M Tape 1039 is designed for dry type transformers, motor winding and low voltage applications that require dielectric and mechanical strength. This conformable tape offers excellent dielectric strength, low stretch and high tensile strength. The unique coating on this tape supports excellent bonding with diamond paper, insulation epoxy during the transformer baking process. The tape is ideal for anchoring end turn tapping and lead wires to banding coils and it provides stiffness for excellent handling during coil winding operations. UL Listed and RoHS 2011/65/EU Compliant.