3M

3M 3340 Silver Foil Tape

3M™ UL181A-P and UL181B-FX 3340 Aluminum Foil Tape is a high temperature, high strength aluminum foil tape coated with a cold weather acrylic pressure sensitive adhesive

2.0 mil aluminum foil backing is ideal as a vapor seal tape for duct closure
Listed for both UL181A-P and UL181B-FX
Replaces mechanical fasteners for rigid duct board

Color: Silver

Liner Material: Paper

Backing/Carrier Material: Aluminum Foil

Adhesive Type: Cold Weather Acrylic

TotalThickness: 3.9 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

2.0 mil aluminum foil backing is ideal as a vapor seal tape for duct closure
Listed for both UL181A-P and UL181B-FX
Replaces mechanical fasteners for rigid duct board
Thermally conductive backing helps heating and cooling efficiency
Permanent acrylic adhesive combined with the durable 2.0 mil backing provides long service life

Specifications

Color	Silver
Backing/Carrier Material	Aluminum Foil
Adhesive Type	Cold Weather Acrylic
Total Thickness	3.9 mil
Backing/Carrier Thickness	2 mil
Adhesive Thickness	1.9 mil
Liner Material	Paper
Adhesive Strength	60 oz/in
Tensile Strength	29 lb/in
Elongation	10%
Minimum Temperature Performance	-40°F
Maximum Temperature Performance	300°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