3M

3M 3380 Silver General Purpose Aluminum Foil Tape

3M™ Aluminum Foil Tape 3380 is a silver 3.25 mil thick industrial grade metal foil tape suitable for general purpose foil tape applications. This product’s metal backing allows for light reflection, heat conduction, and low flammability. This tape also provides low water vapor transmission for light moisture sealing applications.

Multi-purpose foil tape for a variety of applications
Cold weather acrylic adhesive is specifically designed to bond and seal in temps as low as -10°F
Nominal 1.8 mil aluminum foil is excellent for use on fibrous and sheet metal ducts

Color: Silver

Liner Material: PE Coated Kraft

Backing/Carrier Material: Annealed Aluminum Foil

Adhesive Type: Cold Weather Acrylic

TotalThickness: 3.25 mil

Overview
Customize
Features
Specifications
Compliance
Resources

Overview

Consult

Specify a finalized design or create a new one from scratch with our experienced converting experts.

Design

Pair our material sampling library with our precision converting capabilities to optimize and validate a prototype.

Produce

Rely on our top-tier suppliers, strict quality controls, and hands-on help to ensure your product's effectiveness throughout its lifecycle.

Customize

Customize This Material

Our wide range of converting capabilities allow us to take this material and transform it into the right width, length, shape or fabricated part to not only achieve ideal integration into your end use, but also optimize how you apply the material in your application. Our converting equipment paired with our expert engineering team will help you create the exact custom solution for your unique requirements.

To learn more about the most common converting services we offer, or to contact our team to start discussing your solution, please utilize the below links:

Tape Slitting

Die-Cutting

Custom Part Fabrication

Prototyping

Custom Length Rolls

Features

Multi-purpose foil tape for a variety of applications
Cold weather acrylic adhesive is specifically designed to bond and seal in temps as low as -10°F
Nominal 1.8 mil aluminum foil is excellent for use on fibrous and sheet metal ducts
Adhesive performs well in both demanding temperature and humidity applications
Flexible foil conforms well to curved or irregular surfaces
Hand tearable and easy to install
Features an easy release liner

Specifications

Color	Silver
Backing/Carrier Material	Annealed Aluminum Foil
Adhesive Type	Cold Weather Acrylic
Total Thickness	3.25 mil
Backing/Carrier Thickness	2 mil
Adhesive Thickness	1.25 mil
Liner Material	PE Coated Kraft
Liner Thickness	3.1 mil
Adhesive Strength	40 oz/in
Tensile Strength	10 lb/in
Elongation	4%
Minimum Temperature Performance	-30°F
Maximum Temperature Performance	260°F
Cold Temperature Application	Yes

Compliance

We value the importance of up to date an accurate regulatory information on the products we work with. For the most current Compliance and Regulatory information on your product of interest, please contact our experts for assistance.

Resources

Technical Data Sheet

3M Aluminum Foil Tape 3380 is engineered for reliable performance in cold weather conditions, while also maintaining strength in hot temperatures and high humidity environments. Featuring a 1.8-mil thick aluminum foil backed by a pressure-sensitive acrylic adhesive, this tape bonds quickly to a variety of surfaces, including fibrous and sheet metal ducts. Its hand-tearable design and easy-release liner simplify application, even on irregular shapes. With conformable properties and UL723 classification, this silver foil tape offers long-lasting protection against moisture, UV light, and environmental exposure—making it ideal for low-temperature sealing and insulation across a wide range of industrial and commercial applications.

Fibrous ductboard, sheet metal ducts and blankets
Applications requiring flexibility and good temperature performance
General purpose foil tape for a variety of applications

3M