









3M 3340 Aluminum Foil Tape, Silver, 2-1/2 in x 50 yd, 4.0 mil, HVAC Sealing and Patching Ducts, Fiberglass Duct Board, Insulation, Metal Repair (7100189974) (20 Pack)
3M 7100189974 Description
Durable aluminum foil tape for HVAC applications with strong acrylic adhesive, excellent temperature resistance from -40 F to 300 F, and UL 181A-P/181B-FX listings. Ideal for sealing fiberglass duct board, flexible air ducts, and general metal repair.
3M 7100189974 Includes
- (1) Aluminum Foil Tape Roll, 2.5 in x 50 yd
3M 7100189974 Features
- Strong acrylic adhesive for long-term bonding
- Operational temperature range -40 F to 300 F
- Low moisture vapor transmission for reliable sealing
- Conforms to irregular surfaces for consistent application
- UL 181A-P and UL 181B-FX listed for duct closure
- 2.0 mil aluminum foil backing; silver color
3M 7100189974 Specifications
| Product Number | 3340 |
| Width (in) | 2.5 |
| Length (yd) | 50 |
| Color | Silver |
| Adhesive Type | Acrylic |
| Backing Thickness (mil) | 2.0 |
| Elongation at Break | 10% |
| Tensile Strength | 29 lb/in |
| Temperature Range | -40 F to 300 F |
| UL Listing | UL 181A-P; UL 181B-FX |
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
3M 7100189974 Description
Durable aluminum foil tape for HVAC applications with strong acrylic adhesive, excellent temperature resistance from -40 F to 300 F, and UL 181A-P/181B-FX listings. Ideal for sealing fiberglass duct board, flexible air ducts, and general metal repair.
3M 7100189974 Includes
- (1) Aluminum Foil Tape Roll, 2.5 in x 50 yd
3M 7100189974 Features
- Strong acrylic adhesive for long-term bonding
- Operational temperature range -40 F to 300 F
- Low moisture vapor transmission for reliable sealing
- Conforms to irregular surfaces for consistent application
- UL 181A-P and UL 181B-FX listed for duct closure
- 2.0 mil aluminum foil backing; silver color
3M 7100189974 Specifications
| Product Number | 3340 |
| Width (in) | 2.5 |
| Length (yd) | 50 |
| Color | Silver |
| Adhesive Type | Acrylic |
| Backing Thickness (mil) | 2.0 |
| Elongation at Break | 10% |
| Tensile Strength | 29 lb/in |
| Temperature Range | -40 F to 300 F |
| UL Listing | UL 181A-P; UL 181B-FX |



