3M Venture Tape Aluminum Foil Tape 1521CW, Silver, 72 mm x 45.7 m, 2.8 mil, 16 Rolls/Case

• Cold weather acrylic adhesive applies easily at temperatures well below freezing
• Flexible backing conforms well to curved or irregular surfaces
• Hand tearable and easy to install on site without special tools or application methods
• High puncture and tear resistance ensures long life and durability in a variety of applications and environments
• High-strength, dead soft aluminum backing is ideal for applications on fibrous and sheet metal ducts
• Specifically designed to perform in cold weather applications

3M Venture Tape Aluminum Foil Tape 1521CW is a conformable, 2.8 mil tape that is suitable for masking and sealing in general-purpose heat shielding and light-reflecting applications. Coated with cold-weather acrylic adhesive, this durable tape performs well in a wide range of environmental conditions, and bonds and seals at temperatures as low as -10 °F (-23 °C). It is backed by foil that allows it to easily conform to irregular surfaces and on fibrous and sheet metal ductwork. This pressure-sensitive tape is hand tearable and adheres quickly without special application methods or additional tools. It maintains its form without lifting or curling, even after an extended period of time. This tape meets the UL723 flame/smoke rating, as well as the CAN/ULC S102 classification flame/smoke rating. For optimal performance in cold environments, 3M Venture Tape Aluminum Foil Tape 1521CW provides a durable bond in various masking and sealing operations.

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.

Trusted 3M Venture Tape

The 3M Venture Tape Aluminum Foil Tape 1521CW is a reliable choice for sealing and masking. This tape features a cold weather acrylic adhesive that works well even below freezing, ensuring strong bonds in tough conditions.

Its high-strength, dead soft aluminum backing makes it ideal for fibrous and sheet metal ductwork. The 1521CW model offers consistent performance across various applications, backed by the trusted 3M brand.

Flexible Aluminum Foil Backing

This tape’s flexible aluminum foil backing conforms easily to curved or irregular surfaces, making installation smooth and effective. The 72 mm width and 45.7 m length provide ample coverage for many projects.

Its dead soft aluminum material allows it to wrap around corners without cracking or lifting, which is essential for sealing ducts and other complex shapes in HVAC and insulation work.

Easy Hand Tearability

The 3M Venture Tape 1521CW is hand tearable, so you can install it quickly without special tools or techniques. This feature saves time on site and simplifies application in tight or awkward spaces.

With a thickness of 2.8 mil, the tape balances durability with ease of use, making it suitable for general-purpose heat shielding and light-reflecting tasks.

Durable Cold Weather Adhesive

Coated with a cold weather acrylic adhesive, this tape performs well at temperatures as low as -10 °F (-23 °C). It maintains a strong bond in demanding temperature and humidity conditions, ensuring long-lasting seals.

The adhesive’s pressure-sensitive nature allows immediate contact adhesion to various surfaces, including fibrous and sheet metal ducts, making it versatile for many sealing applications.

Case Pack Convenience

This product comes in a pack of 16 rolls, each measuring 72 mm by 45.7 m. The pack size supports larger projects or ongoing maintenance needs, providing consistent tape quality across all rolls.

The 2.8 mil thickness and silver color make it suitable for visible applications where durability and appearance matter, especially in construction and HVAC environments.