Heavy Duty Aluminum Foil Tape 438

3M's heavy duty aluminum foil tape 438 is a high-performance foil tape designed for numerous applications across a broad range of industries. 3M heavy duty aluminum foil tape 438 is comprised of a dead soft, thermally conductive aluminum backing which dissipates heat over the surface of the tape to reduce hot spots and protect the substrate from the effects of high temperatures, making it ideal for heat shielding, heat reflecting, seaming, and sealing. Coated with 3M's highly engineered acrylic adhesive, it can withstand exposure to high heat and humidity while maintaining a strong and reliable bond. This tape can withstand various moisture, weathering, UV, and solvents to provide an excellent work life, indoors or out.

3M's aluminum foil tape 438 is UL Recognized to UL 746C (File E 122798) and classified by UL to UL 723, Class L for low flammability rating (File R 7311). It meets F.A.R 25.853(a). The temperature use range is from -65°F to +300°F (-54°C to +149°C).