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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 | #68,150 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #114 in Butyl Tape |
| Brand | Nashua |
| Brand Name | Nashua |
| Color | Silver |
| Compatible Material | Metal, Rubber |
| Customer Reviews | 4.6 out of 5 stars 47 Reviews |
| 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 | 2 mil aluminum foil - printed |
| Material Type | 2 mil aluminum foil - printed |
| Model | 1086865 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Other Special Features of the Product | Aggressive Butyl Mastic Adhesive, Performs to SMACNA Pressure Classes and Seal Classes |
| Part Number | 1086865 |
| Product Dimensions | 1200"L x 2.83"W x 0.02"Th |
| Size Name | 3 in. x 100 ft. (72mm x 30.5m) |
| Special Feature | Aggressive Butyl Mastic Adhesive, Performs to SMACNA Pressure Classes and Seal Classes |
| 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 |
D**R
Great product!
Sticks well and doesn't peal. In fact it can be difficult to peel the protective film because of how much it adheres to things. I use a razor blade to help peal it. Also it far cheaper to buy this out of a local hardware store then here on amazon. It's half the price! Amazon is $58.88 right now and homedepot is $27 and the local mom and pops hardware store is $24...
G**N
Good fit
Had some issues with other tape but this works well
B**R
Excellent adhesive. Easy to work with.
Excellent holding power. I will update my review after it goes through a cooling season. But I do not see the moisture affecting it. Great product!
S**G
HVAC ducting tape
A little pricey, but a quality tape that lasts for years & years!
J**Y
Stays stuck to the duct forever...
This is thee best sticking duct tape. I use it for high heated areas up to 210 degrees. And cold climates it doesn’t separate.
D**B
My favorite brand of tape for sheet metal work
My favorite brand of tape for sheet metal work. Are use this brand of tape for vent installation and dryer vent installation it works good can take fairly high temperatures. Sticks very well and can be removed and repositioned.
H**C
Best HVAC tape on the market
You need this to seal leaking joints and connections in your HVAC ducts.
J**Z
Good tape
This tape is the boss 👍🏼
R**D
As Expected
As Expected, a little thinner than I thought it would be but still worked great for me.
Trustpilot
1 month ago
2 months ago