Premium 2.8 mil aluminum foil tape with cold-weather acrylic adhesive for extreme temperature applications. Hand tearable, conformable backing, UL723 rated, ideal for duct sealing and insulation vapor barriers.
3M™ Venture Tape™ Aluminum Foil Tape 1521CW is a premium conformable 2.8 mil aluminum foil tape specifically engineered for cold weather applications and demanding environmental conditions. This high-strength, dead soft aluminum backing tape is ideal for masking, sealing, and heat shielding applications on fibrous and sheet metal ducts. The tape features a cold-weather acrylic adhesive that applies easily at temperatures as low as -10°F (-23°C), with a service temperature range from -40°F/-40°C to 250°F/121°C, making it suitable for extreme temperature and humidity applications.
This pressure-sensitive tape offers superior resistance to weathering, mold, UV rays, and extreme environmental conditions. The dead soft aluminum backing conforms easily around corners and to curved or irregular surfaces without lifting or curling. It is hand tearable and installs quickly without requiring special tools or application methods, providing excellent puncture and tear resistance for long-lasting durability. The tape meets UL723 flame/smoke rating (10/10 5/10) and is U.S. Coast Guard Approved (CGA #164.112/63/0).
Each roll measures 61 inches wide by 180 yards long with a 1.4 mil aluminum foil backing and 2.8 mil total thickness. The tape adheres immediately upon contact to various materials and maintains its form for extended periods with excellent aging properties. Ideal for vapor sealing reinforced fiberglass and mineral wool thermal insulation, as well as seam and joint sealing on sheet metal and fibrous ductwork, this industrial-grade tape is backed by exclusive 3M technical expertise and application support.
Key Features
- High-strength dead soft aluminum backing for demanding applications on fibrous and sheet metal ducts
- Cold-weather acrylic adhesive applies easily at temperatures as low as -10°F (-23°C)
- Service temperature range from -40°F to 250°F (-40°C to 121°C) for extreme environments
- High puncture and tear resistance ensures long-lasting durability and extended performance
- Hand tearable and easy to install without special tools or additional application methods
- Flexible conformable backing adapts to curved and irregular surfaces without lifting
- UL723 flame/smoke rating (10/10 5/10) and U.S. Coast Guard Approved
- Superior resistance to weathering, mold, UV rays and extreme environmental conditions
- Pressure-sensitive adhesive bonds immediately upon contact to various materials
- Maintains form without curling or lifting for extended periods with excellent aging properties
Technical Specifications
| Specification |
Value |
| Product Number | 1521CW |
| Brand | 3M Venture Tape™ |
| Color | Silver |
| Backing Material | Aluminum Foil |
| Backing Thickness (Imperial) | 1.4 mil |
| Backing Thickness (Metric) | 0.04 mm |
| Total Tape Thickness | 2.8 mil (2.7 mil without liner) |
| Total Tape Thickness (Metric) | 0.07 mm |
| Overall Width (Imperial) | 61 in |
| Overall Width (Metric) | 1,549.4 mm |
| Overall Length (Imperial) | 180 yd |
| Overall Length (Metric) | 164.59 m |
| Adhesive Type | Cold-Weather Acrylic |
| Primary Liner | Polycoated Kraft |
| Tensile Strength (Imperial) | 15 lb/in |
| Tensile Strength (Metric) | 26.3 N/100mm |
| Elongation at Break | 4% |
| Minimum Operating Temperature | -40°F (-40°C) |
| Maximum Operating Temperature | 250°F (121°C) |
| Application Temperature | -10°F (-23°C) and below |
| Shelf Life | 12 Months |
| Packaging | 1 Roll/Case |
| UPC Code | 00638060144251 |
| 3M ID | 7100166474 |
| Flame/Smoke Rating | UL723 (10/10 5/10) - UL file #R10984 |
| Coast Guard Approval | U.S. Coast Guard Approved (CGA #164.112/63/0) |
| Application Type | Pressure-Sensitive, Hand Tearable |
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