3M™ Polyimide Film Electrical Tape 92, 1 3/4 in X 36 yds, Mini-Case, 3-in plastic core. 3M™ Tape 92 is a high performance, electrical tape with a polyimide film backing. This tape is designed to provide thick insulation for coils, harnesses and capacitors. The flame retardant tape withstands a temperature range of 0°C to 180°C (32 to 356 °F).