Withstands Exposure to High Heat and Humidity
Consisting of a dead soft, thermally conductive aluminum backing, 3M Heavy Duty Aluminum Foil Tape 438 dissipates heat over the surface of the tape to reduce hot spots and protect the substrate from the effects of high temperatures. 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.
3M Aluminum Foil Tape 438 is UL Recognized to UL 746C (File E 122798) and Classified by UL to UL 723 “L” for low flammability rating (File R 7311). It meets F.A.R 25.853(a). Temperature use range is from -65? to 300?F (-54? to 149?C).
Recommended Applications
- Heat shielding of delicate parts
- Heat reflecting
- Moisture barrier
- Seaming and sealing
- Refrigerator and freezer coil attachment
- Plastic protection against heat and UV exposure

Dynabrade 79035 3/4" W x 18" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 53680 Rotor
Standard Abrasives 830171, Aluminum Oxide Buff and Blend HS Roll, Very Fine, 6 in x 30 ft, 7010368508
Dynabrade 54021 1/4"-28 Male 1/4"-20 Male, 1-3/16" Length
Dynabrade 10843 DynaPen Reciprocating Tool, 14,000 SPM, 1/8" Collet
Dynabrade 78305 1-1/2" Dia. x 1" W x 1/4" Shank, 80 Grit, A/O DynaCut Flap Wheel, 10/pack
Dynabrade 59119 3" Dia. HiVac Dynorbital-Spirit Mesh Abrasive System, Self-Generated Vacuum, 3/32" Orbit
Dynabrade 21752 Valve Block for 900, 9,000 RPM SandPolish
Dynabrade 53104 Central Vacuum Drill, 4,500 RPM, 3/8" Chuck
Dynabrade 95675 1/4" Male Plug with 1/4" NPT Male Thread
Dynabrade 95677 1/4" Male Plug with 1/4" NPT Female Thread 
