Premium 3M aluminum foil tape with 2.0 mil backing for HVAC duct sealing, operating from -40°F to 300°F with UL 181 certification. 20 rolls per case, 2.5 in x 50 yd each.
The 3M™ Foil Tape 3340 is a premium aluminum foil backing tape specifically engineered for sealing HVAC ducts and air conditioning systems. Featuring a 2.0 mil aluminum foil backing combined with a strong, pressure-sensitive acrylic adhesive, this tape delivers exceptional performance across extreme temperature ranges from -40°F (-40°C) to 300°F (149°C). The tape is ideal for sealing rigid fiberglass ductboard systems, flexible air ducts, and air connectors, making it an essential product for HVAC professionals and industrial applications.
This professional-grade foil tape meets stringent UL 181 A-P and UL 181 B-FX standards, ensuring reliability and quality in demanding applications. The 2.0 mil aluminum foil backing serves as an excellent moisture and dust barrier while maintaining low moisture vapor transmission rates, providing superior vapor sealing capabilities. The permanent acrylic adhesive combined with the durable backing ensures long service life and superior temperature and UV resistance, delivering a strong, lasting, and reliable bond that withstands both hot and cold temperature conditions.
Each case contains 20 rolls of tape, each measuring 2.5 inches wide by 50 yards long with a total thickness of 4 mil. The tape comes with an easy-releasing poly-coated kraft paper liner that protects the adhesive and keeps the tape ready for immediate use. Used extensively across aerospace, automotive, construction, electronics, military, government, and general industrial applications, the 3M™ Foil Tape 3340 is the trusted choice for professionals requiring reliable duct sealing solutions.
Key Features
- 2.0 mil aluminum foil backing provides superior moisture and dust barrier protection
- Operates reliably across extreme temperature range of -40°F to 300°F (-40°C to 149°C)
- Meets UL 181 A-P and UL 181 B-FX standards for HVAC applications
- Permanent acrylic adhesive with superior temperature and UV resistance
- Low moisture vapor transmission rate for excellent vapor sealing capability
- Thermally conductive backing enhances heating and cooling system efficiency
- Replaces mechanical fasteners for rigid duct board installation
- Easy-releasing poly-coated kraft paper liner for convenient application
- 20 rolls per case with 50 yards length per roll
- Ideal for rigid fiberglass ductboard and flexible air duct systems
Technical Specifications
| Specification |
Value |
| Product Number | 3340 |
| Brand | 3M™ |
| Color | Silver |
| Backing Material | Aluminum Foil |
| Backing Thickness (Imperial) | 2 mil |
| Backing Thickness (Metric) | 0.05 mm |
| Adhesive Type | Acrylic, Pressure-Sensitive |
| Overall Width (Imperial) | 2.5 inches |
| Overall Width (Metric) | 63.5 mm |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.72 meters |
| Total Tape Thickness (Imperial) | 4 mil |
| Total Tape Thickness (Metric) | 0.1 mm |
| Tensile Strength (Imperial) | 29 lb/in |
| Tensile Strength (Metric) | 50.8 N/100mm |
| Elongation at Break | 10% |
| Minimum Operating Temperature (Fahrenheit) | -40°F |
| Minimum Operating Temperature (Celsius) | -40°C |
| Maximum Operating Temperature (Fahrenheit) | 300°F |
| Maximum Operating Temperature (Celsius) | 149°C |
| Primary Liner | Poly-Coated Kraft Paper |
| Adhesive Thickness (Metric) | 0.05 mm |
| Quantity per Case | 20 rolls |
| UL Listings | UL 181 A-P, UL 181 B-FX |
| Primary Application | HVAC Duct Sealing |
| Recommended Use | Sealing rigid fiberglass ductboard, flexible air ducts, and air connectors |
| Industries | Aerospace, Automotive, Construction, Electronics, General Industrial, MRO, Metalworking, Military & Government, Specialty Vehicles, Transportation |
| UPC Code | 00638060401323 |
| 3M ID | 7100189974 |
| Moisture Vapor Transmission | Very Low |
Order 3M Foil Tape 3340 Silver HVAC Duct Sealing 2.5 inch at wholesale prices for companies and factories in Iraq and Middle East, get the best deals on bulk purchases, contact us today.
