
3M 3340 Aluminum Foil Tape for HVAC Duct Sealing
Overview 3M™ 3340 Aluminum Foil Tape is a high-strength aluminum foil tape featuring a pressure-sensitive acrylic adhesive and a paper release liner. Designed for HVAC duct sealing applications, it provides reliable adhesion and moisture vapor sealing performance across a wide range of environmental
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Products Description
3M™ 3340 Aluminum Foil Tape is a high-strength aluminum foil tape featuring a pressure-sensitive acrylic adhesive and a paper release liner.
Products Features
- Model: 3M Foil Tape 3340
- Temperature Resistance: -40°C to 149°C
- Peel Strength: 6.6 N/cm at 23°C
- Tensile Strength: 50.8 N/cm
- Elongation at Break: 10%
- Backing Thickness: 0.05 mm (2 mil)
Products Construction
Backing: High-strength aluminum foil; Adhesive: Acrylic pressure-sensitive adhesive.

Physical Properties
| Technical Parameter | Specification |
|---|---|
| Product Name | 3M Foil Tape 3340 |
| Backing Material | High-strength aluminum foil |
| Adhesive Type | Acrylic pressure-sensitive adhesive |
| Color | Natural aluminum / silver |
| Backing Thickness | 0.05 mm (2 mil) |
| Total Tape Thickness | 0.09 mm (3.9 mil) |
| Liner | Paper |
| 180° Peel Adhesion | 6.6 N/cm at 23°C |
| Tensile Strength | 50.8 N/cm |
| Elongation at Break | 10% |
| Long-Term Temperature Resistance | -40°C to 149°C |
| Standards / Listings | UL 181A-P and UL 181B-FX |
Values shown are from the product data sheet. Confirm suitability for your specific application before ordering.
Products Application
This tape is used for sealing, gasketing and cushioning between components. Tell us the gap size, the surfaces to be joined and the required size, and our team will confirm the right model for your process.
FAQ
Can this tape be supplied die-cut or in custom widths?
Our die-cutting service covers custom shapes and widths. Send your drawing or the required width and length, and we will confirm availability for this model.
What temperature can it withstand?
According to the product data, the value is -40°C to 149°C. Confirm your process temperature with our team before ordering.
How do I request a sample or quotation?
Send the model, required size, color, quantity and your application to [email protected], or use the inquiry form on this page.
Request a Quote
To help us prepare a quotation, please include the model, required width and length, color, quantity and your application. You can also e-mail [email protected].
