High-Strength Performance
3M™ Venture Tape™ Aluminum Foil Tape 1521CW is a 1.4 mil, high-strength, dead soft aluminum foil tape that excels in demanding temperatures and humidity applications. This tape offers superior resistance to weathering, mold, UV and extreme environmental conditions. A dead soft aluminum backing conforms around corners and to curved and irregular surfaces with ease. It is an ideal choice for applications on fibrous and sheet metal ductwork. The tape is hand tearable and installs easily, eliminating the need for additional tools or application methods.
3M™ Venture Tape™ Aluminum Foil Tape 1521CW is UL723 classified (10/10 5/10 Flame/Smoke Rating) [UL file #R10984]. It is U.S. Coast Guard Approved (CGA #164.112/63/0).
Recommended Applications
- Vapor seal for reinforced fiberglass and mineral wool thermal insulation
- Seam and joint sealing on sheet metal and fibrous ductwork
Excels in Demanding Temperature and Humidity Applications
3M™ Venture Tape™ Aluminum Foil Tape 1521CW is coated with a pressure sensitive cold weather solvent acrylic adhesive specifically designed for cold weather applications. This adhesive performs well in both demanding temperature and humidity applications. It adheres immediately on contact to a variety of materials, including fibrous and sheet metal ducts. With a service temperature ranging from -40°F/-40°C to 250°F/121°C, this tape can be applied in a variety of environmental conditions. Once bonded, it will provide good holding power for extended periods with good aging properties that resists lifting and curling.
3M™ Metal Foil Tapes
Aluminum is just one of the metal-backed tapes available from 3M. Our foil tapes resist failure from common sources of degradation including moisture, ultraviolet rays and many chemicals, and are commonly used for reflecting, wrapping, masking, sealing, and more in applications from air ducts to washing machines. As with all 3M products, our 3M™ Venture Tape™ Aluminum Foil Tape 1521CW is supported by exclusive 3M technical expertise and application advice. 3M Aluminum foil tapes are suitable for demanding applications in construction, aerospace, automotive, appliance, maintenance, repair and operations and many more segments. They are also thermally conductive for heating/cooling efficiency.
Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

Standard Abrasives 260013, Cross Buff Kit 260013, 7000121667
Dynabrade 06095 "O" Ring
Dynabrade 57127 3" (76 mm) Dia. Right Angle Depressed Center Wheel Grinder, Steel Housing, .55 HP, 15,000 RPM, 3/8"-24 Spindle
Dynabrade 56829 6" Dia. Self-Generated Vacuum Dynorbital Supreme Random Orbital Sander, 3/16" Orbit
Dynabrade 11518 Rubber Drive Wheel
Dynabrade 78591 3/8" Dia. x 1" W x 1/8" Center Hole, 80 Grit, 100/pack
Dynabrade 91542 5" Dynacut Extreme Orange Premium Film Disc, 320 Grit, Hook & Loop, Vacuum Holes, 50/Box
Dynabrade 79822 3" P1500 Grit Dynasoft Finishing Film Non Vac Hook Face Disc, 50 per box
Dynabrade 78782 DynaCut Wire Cup Brush 3" Dia. x .014 5/8-11 UNC AH Steel
Dynabrade 78046 1/4" W x 24" L Medium NWN DynaBrite Belt, 10/pack
Dynabrade 58045 Vacuum Dynafine Tear-Drop Disc Pad, Vinyl-Face
Dynabrade 58514 2-3/4" W x 7-3/4" L Dynabug II Orbital Sander, Non-Vacuum, .11 hp, 8,000 RPM, 3/16" Orbit
Dynabrade 54359 .7 hp Right Angle Die Grinder, Rear Exhaust, 18,000 RPM, 1/4" Collet
Standard Abrasives 704406, A/O Straight Cartridge Roll, 1/4 in x 1-1/2 in x 1/8 in 60, 7100080008
Dynabrade 58442 6" Dia. Two-Hand Gear-Driven Sander, Non-Vacuum, Non-Vacuum, .45 HP, 900 RPM, PSA
Dynabrade 15316 Steel Drive Wheel
Dynabrade 91709 DynaMesh 3" 400 Grit Hook & Loop Discs, 50 per box
Dynabrade 93341 Carbide Burr, 1/8" Dia., SC-42 D/C Burr, Cylinder-Radiused End, 9/16" Flute L, 1/8" Shank
Dynabrade 78412 3" Dia. x 1" W x 1/4" Shank, 120 Grit, A/O DynaCut Flap Wheel
Dynabrade X61 6" (152 mm) Dia. Non-Vacuum Dynorbital Extreme Random Orbital Sander, .3 HP, 12,000 RPM, 3/16" Orbit, PSA
Dynabrade 78751 1" x 1"-A38 DynaFire A/O Mounted Point, Vitrified, 5/pack
Dynabrade 94790 1/2" W x 72" L 120 Grit A/Z DynaCut Belt, 10/pack
Dynabrade 76015 Wool Pad
Dynabrade 78136 6" Dia. x 2" W x 1" Center Hole, 2S Medium, S/C DynaBrite Multi-Finish Convolute Wheel, 2/box
Dynabrade 11657 Contact Arm Extender
Dynabrade 94857 12' Max Flow 10mm I.D. Air Hose Assembly, Male (1/4") / Male (1/4") Fitting Ends Included
Dynabrade 90479 1/4" W x 34" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 95697 Retaining Ring
Dynabrade 01030 Drop-In Motor
Dynabrade 57737 Overskirt Shroud for Orbital Sander
Dynabrade 59020 5" Dia. Non-Vacuum Dynorbital-Spirit Random Orbital Sander, 3/16" Orbit
Dynabrade 01477 Valve Stem
Dynabrade 79591 1-1/2" W x 30" L Coarse Dynaprep Premium Plus Belt, 10/pack
Dynabrade 90636 3" W x 7-3/8" L 320 Grit A/O DynaCut Belt, 10/pack
Dynabrade 54767 3" (76 mm) Dia. Right Angle Type 27 Depressed Center Wheel Grinder, .7 HP, 18,000 RPM, 3/8"-24 Spindle
Dynabrade 62844 Raptor Vac Dust Extraction Arm, w/ 15" Round Hood
Dynabrade 56262 6" Dia. Vacuum Disc Pad, Vinyl-Face
Dynabrade 93248 8" Dia. x 1/2" Center Hole, 220 Grit, A/O, Arbor-Mount Sanding Star 
