Intertape 4618 Inert, high strength backing and heat resistant silicone adhesive for high temperature applications. This tape resists edge fraying and rotting and is flexible and varnish absorbent. Used in applications where solvent resistance, flame retardance and abrasion resistance is required. - When the situation calls for high heat resistance and tensile strength, glass cloth tapes are ideal for many electrical insulation requirements. They offer outstanding flexibility and conformability.