For the various industries using cable, color-coding, flexibility and insulation of the individual wires within a cable are essential. Our Heat Seal Tapes are made of a 22-gauge polyester film with our proprietary color coat, chemically engineered so the film will stick to itself when wrapped around a wire. The tapes are available in any color, and, at less than a 1/4 mil in thickness, are adequately flexible and yet provide enough insulation so as not to interfere with other wires within the cable.