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🛡️ Seal smarter, not harder — the pro’s choice for airtight confidence!
Nashua FoilMastic Butyl Rubber Sealant Tape is a 3-inch by 100-foot UL 181B-FX listed aluminum foil tape coated with 15 mils of aggressive butyl rubber adhesive. Designed for indoor and outdoor HVAC sealing and metal repairs, it delivers instant airtight and waterproof seals, conforms easily to complex shapes, and meets rigorous SMACNA pressure and seal class standards. With excellent resistance to moisture, solvents, flame, smoke, and temperatures up to 200°F, it’s a durable, code-compliant solution favored by professionals.
| ASIN | B079ZCJ8KC |
| Adhesive Format | Rubber |
| Adhesive Location | One-sided |
| Adhesive Material | Butyl Rubber |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #107,870 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #163 in Butyl Tape |
| Brand Name | Nashua |
| Color | Silver |
| Compatible Material | Metal, Rubber |
| Customer Reviews | 4.7 4.7 out of 5 stars (50) |
| Foil Thickness | 2 mils |
| Included Components | ** Please Note this listing is for 1 roll only** |
| Item Dimensions L x W x Thickness | 1200"L x 2.83"W x 0.02"Th |
| Item Resistance | moisture_resistant, solvent_resistant |
| Item Thickness | 0.43 millimeters |
| Item Weight | 3.3 pounds |
| Manufacturer | Nashua |
| Material Type | 2 mil aluminum foil - printed |
| Model | 1086865 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Other Special Features of the Product | Printed |
| Part Number | 1086865 |
| Size Name | 3 in. x 100 ft. (72mm x 30.5m) |
| Surface Recommendation | Glass |
| Tensile Strength | 23 pounds_per_inch |
| UPC | 742366010155 |
| Unit Count | 30.48 meter |
| Upper Temperature Rating | 200 °F |
| Water Resistance Level | Water Resistant |
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