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.

Insize 7232, SCRIBER, 6928640320088
Dynabrade 90123 - 12" x 12" Premium Microfiber Wipe, 10-Pack, Teal
3M 94702, Cubitron ll Cloth Belt 947A, 120+ X-weight, 1/4 in x 24 in, Fabri-lok, Single-flex, 7100141686, 200 per case
3M 97421, Aluminum Foil Tape 3380, Silver, 72 mm x 45 m, 3.25 mil, 7010375681
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
3M 15121, Scotch-Brite Cut and Polish Unitized Wheel, CP-UW, 5A Fine, 3 in x 1/4 in x 3/8 in, 7010364528
3M 26129, PPS Series 2.0 Adapter, Type S34, 3/8 Female, 18 Thread NPS, 7100135938
3M 22397, Roloc Disc 361F, 60 YF-weight, TR, 1-1/2 in x NH, 7000045097
3M 31219, 675L, 1/2" X 72", 30u, Diamond Microfinishing Film Belt 7010508920
3M 26597, Cloth Belt 341D, P320 X-weight, 1 in x 42 in, Film-lok, Single-flex, 7010294511, 200 per case
3M 19674, Scotch-Seal Industrial Sealant 800, Reddish Brown, 5 oz Tube, 7000000792, 36/Case
3M 22395, Roloc Disc 361F, 60 YF-weight, TR, 3 in, Die R300V, 7000045098
3M 87103, Cloth Belt 341D, 24 X-weight, 9 in x 20 in, Fabri-lok, Single-flex, 7010326200, 20 per case
3M 21762, Stikit Cloth Disc Roll 341D, 60 X-weight, 6 in x NH, Die 600Z, 7000118780
3M 71878, Flexible Diamond Hand File 6210J, Yellow 18, N40, NO 1, 7000082156, 10 per case
3M 33349, 641WY 1/4" X 24", 220 Mesh Diamond Cloth Belt, 7010534919
3M 94701, Cubitron ll Cloth Belt 947A, 80+ X-weight, 1/4 in x 24 in, Fabri-lok, Single-flex, 7100141690, 200 per case
Dynabrade 91165 1/2" W x 13" L 60 Grit A/O DynaCut Belt, 50/pack
3M 20360, Scotch-Weld Epoxy Adhesive 2216, Gray, Part B, 5 Gallon Drum (Pail), 7000046360
3M 16614, Accuspray Atomizing Head, Green, 1.3 mm, 7100086806 (4 Nozzles/Kit)
3M 11419, Roloc Disc 361F, P240 XF-weight, TR, 2 in, Die R200P, 7000045105
3M™ 72013, Adapter 529-04-50, 110-120 VAC, 7000131705, 1 EA/Case
3M 55065, Cubitron II Cloth Belt 984F, 36+ YF-weight, 3/4 in x 20-1/2 in, Fabri-lok, Single-flex, 7000148169, 200 per case
ACS Diamond Cloth Belt, CX1250 1/2" X 18" 125U
3M 00570, DynatronAuto Seam Sealer Caulk, 570, White, 12 oz, 7000125070, 12 per case
3M 36878, Self-Stick Liquid Protection Fabric, Blue, 14 in x 300 ft, 7100169505
Norton 66254489957 Wheel, Vortex-7am, 6" X 1/2" X 1" C2312 Nor VTME7 PH VTC+, 4 Each
3M 01875, Charge-Collection Solar Tape 3011, 2 mm x 1200 m, 7010312686
3M 16583, Accuspray Atomizing Head, Green, 1.3 mm, 7010309279
3M 26583, Accuspray Refill Pack for PPS Series 2.0, Green, 1.3 mm, 7100152953
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
3M 62812, Adhesive Sealant 740 UV, White, 290 mL Cartridge, 7100116448, 12 per case
3M 10118, Synthetic Steel Wool Pads, 10118NA, #0 Fine, 7000126148 
