Green High Temperature Polyester Film Thermal Insulation Silicone Adhesive Masking tape Green High Temperature Polyester Film Thermal Insulation Silicone Adhesive Masking tape for High Temperature Furnace is manufactured by high temperature resistant polyester film as backing and coated with pressure sensitive silicone adhesive. Green High Temperature Polyester Adhesives Tape is a general purpose polyester tape ideal for masking in high temperature applications. The translucent green backing is tear resistant.