3M

3M 4380 Silver General Purpose Aluminum Foil Tape

3M™ Aluminum Foil Tape 4380 is a 3.25 mil industrial grade metal foil tape used for general purpose applications. This tape minimizes vapor transmission making it a good sealant. Other uses include light reflection, heat shielding, and thermal conducting.

Resists flame, moisture, weather, UV degradation and many chemicals
Thermally conductive tape reflects and dissipates radiant heat to protect heat sensitive components or surfaces
Low moisture vapor transmission rate offers excellent sealing and patching performance

Color: Silver

Backing/Carrier Material: Dead Soft Aluminum Foil

Adhesive Type: 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

Resists flame, moisture, weather, UV degradation and many chemicals
Thermally conductive tape reflects and dissipates radiant heat to protect heat sensitive components or surfaces
Low moisture vapor transmission rate offers excellent sealing and patching performance
Malleable foil conforms well to irregular shapes and surfaces
Performs under a wide temperatures range from 30°F to 300°F
Good aging performance both indoors and outdoors
Self-wound

Specifications

Color	Silver
Backing/Carrier Material	Dead Soft Aluminum Foil
Adhesive Type	Acrylic
Total Thickness	3.25 mil
Backing/Carrier Thickness	2 mil
Adhesive Thickness	1.25 mil
Adhesive Strength	40 oz/in
Tensile Strength	10 lb/in
Elongation	4%
Minimum Temperature Performance	-30°F
Maximum Temperature Performance	300°F

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 4380 features a durable aluminum foil backing and pressure-sensitive acrylic adhesive, making it ideal for sealing, splicing, masking, and holding. Designed for general-purpose use, it offers reliable protection against heat and flame in demanding environments.

General use holding, patching and sealing applications
Light reflecting
Heat shielding applications
Moisture and vapor barrier
Thermal conducting

3M