White Polyimide B33 Flame Retardant Wire Wrap. Flame Retardant Wire Wraps (B-472) are ideal for cable and wire bundle applications and label applications where self-extinguishing properties are required. Polyimide material specifically designed to self-extinguish and prevent flames from propagating. Matte finish material with permanent acrylic adhesive can be thermal transfer printed or dot matrix printed. RoHS compliant to 2005/618/EC MCV amendment to RoHS Directive 2002/95/EC. Service temperature of -40°F to 212°F (-40°C to 100°C).