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3M Aluminum Foil Tape 3340 is a premium 2.5" x 50 yd HVAC sealing tape featuring a 4.0 mil thick aluminum foil backing combined with a pressure-sensitive acrylic adhesive. Engineered to withstand extreme temperatures from -40°F to 300°F, it provides a durable vapor barrier against moisture, dust, and chemicals. Certified to UL181A-P and UL181B-FX standards, this tape ensures reliable, long-lasting duct sealing and patching for professional-grade HVAC, insulation, and metal repair applications.
| ASIN | B00DY9IXFI |
| Adhesive Format | Narrow Tape |
| Adhesive Location | Single Sided |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #2,701 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #37 in Duct Tape |
| Brand Name | 3M |
| Color | Silver |
| Compatible Material | Acrylic,aluminum,automotive,glass,kraft Paper,metal |
| Configuration | 2.5 inches x 50 yards |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,017) |
| Global Trade Identification Number | 00051111078112 |
| Included Components | Aluminum Foil Tape (1 Roll) |
| Item Dimensions L x W x Thickness | 2.5"L x 2.5"W |
| Item Resistance | Moisture Resistant, Water Resistant |
| Item Thickness | item_thickness.string_value Inches |
| Item Weight | 8 ounces |
| Manufacturer | 3M |
| Material Type | solid |
| Model | 70006658481 |
| Number of Items | 1 |
| Other Special Features of the Product | Long,Strong |
| Part Number | 3340 |
| Recommended Uses For Product | Sealing |
| Size Name | 2.5 In. X 50 Yd. |
| Surface Recommendation | Metal |
| Tensile Strength | 29 Pounds |
| UPC | 051111078112 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Water Resistant |
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