tesa 4163 tesaflex is a specialty soft-PVC insulating and identification tape 100 mm wide by 33 m long, with a UV- and weather-resistant acrylic adhesive. The plasticised film conforms well over irregular substrates and holds its dimensional stability across a wide temperature range. It is used for phase or circuit marking, cable-bundle wrapping, and general electrical insulation on installations exposed to outdoor conditions. Supplied in packs of 12 rolls for professional trade users.