The 3M Polyimide Film Electrical Tape 1218 features a 1-mil thick amber polyimide backing with a solvent-resistant acrylic adhesive. Designed for exceptional heat and solvent resistance, it is suitable for applications such as coils, capacitors, harnesses, and as a cover layer for flexible printed circuits. The tape measures 1 inch by 5 yards, is flame retardant, UL recognized, and available in custom widths upon request.