3M aluminum foil tapes 427 combine a 3 Mil nominal dead soft aluminum foil backing with a transparent acrylic adhesive. 3M aluminum foil tape 427 offers an easy-release liner. Thermally conductive tape helps dissipate heat and improves heating and cooling efficiency to protect temperature sensitive materials. 3M aluminum foil tape 427 dissipates heat over the surface of the tape to reduce hot spots and protect the substrate from the effects of high temperatures, it is a linered version of our 3M aluminum foil tape 425, making it suitable for die-cutting applications, coated with our highly engineered acrylic adhesive, it is capable of withstanding exposure to high heat and humidity while maintaining a strong and reliable bond, this tape can withstand a variety of moisture, weathering, UV and solvents in order to provide an excellent work life, indoors or out.