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3M Aluminum Foil Tape 3381 is a 1.88-inch by 50-yard, 2.7 mil thick silver tape designed for HVAC sealing, insulation, and metal repair. Featuring a 1.4 mil aluminum foil backing with a cold-weather acrylic adhesive, it excels in extreme temperatures (-30°F to 250°F), provides a robust moisture and chemical barrier, and offers UV resistance for long-term outdoor use. Its conformable design ensures easy application on irregular surfaces, making it a versatile, durable solution for professional-grade sealing and patching.



| ASIN | B00A7I5L86 |
| Best Sellers Rank | #101,856 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #134 in High Temperature Tape |
| Brand | 3M |
| Color | Silver |
| Compatible Material | Aluminum,acrylic,metal,aluminum Foil |
| Date First Available | May 31, 2012 |
| Department | unisex |
| Is Discontinued By Manufacturer | No |
| Item Resistance | UV, dust, flame, moisture |
| Item Thickness | 2.7 Mils |
| Item Weight | 1.01 pounds |
| Item model number | 051111078129 |
| Manufacturer | 3M |
| Material | Acrylic, Aluminum, Foam |
| Number of Items | 1 |
| Product Dimensions | 2.83"L x 1.88"W |
| Recommended Uses For Product | Sealing |
| Size | 1.88 in x 50 yd |
| Special Feature | Reflective, Uv-Resistant |
| Surface Recommendation | Metal |
| Unit Count | 147.6 Feet |
| Upper Temperature Rating | 250 Degrees Fahrenheit |
| Water Resistance Level | Water Resistant |
P**X
Great for dryers!
Let's be real – no one gets giddy about aluminum foil tape. It's like the socks of the home repair world: necessary, but about as exciting as doing taxes. BUT, let me sing the praises of 3M Aluminum Foil Tape 3381, because this ain't your bargain-bin tape, folks. It's got superpowers I never knew aluminum foil could possess ... Why you NEED this tape in your life: HVAC's New Best Friend: Leaky ducts are the air-conditioning world's villain. This tape? It's the superhero! Seals those gaps like nobody's business, saving you on energy bills and the shivers in winter. Who knew some shiny tape could have a bigger financial impact than your stockbroker? The DIY MacGyver: Got a rattle in your car? Wobbly furniture? Hole in your kid's inflatable unicorn pool? Patch it with this tape. It sticks to practically anything, and its durability defies logic. Now if only it could make me handy enough to actually handle bigger home improvement projects... A Cold Weather Warrior: The description says "cold weather," but honestly, this tape is tough as nails year-round. Rain, sleet, heat wave – it doesn't budge. Mother Nature might as well take a coffee break, 'cause this tape won't let her ruin your repairs. Romance Revitalizer? (Seriously, hear me out!): Spouse complaining about squeaky cabinets? A "strategically" placed strip of this tape quiets that hinge better than flowers. Now, THAT'S relationship-saving sorcery right there. Disclaimer: Might not fix ALL domestic disputes. Bonus: Zombie Apocalypse Prep: I mean, have you SEEN the strength of this tape? A makeshift shelter, a weapon patch-up... This tape's versatility could buy you precious time against the undead. Look, when's the last time duct tape did that? Okay, maybe I'm overselling it a tad, but you get the point. This tape is surprisingly impressive. It's made my DIY attempts less disastrous, kept my house's temperature regulated, and might even win me brownie points with the spouse. Now, where did I put that wobbly chair...
J**.
Quailing multi-purpose foil tape.
The tape arrived as described with no issues I bought the tape to use to cover holes at the bottom of my HVAC unit to keep critters from getting into my crawl space and to secure ducting to vents I replaced. It has worked great, and held up, wonderfully even in the rain. It is also handy for any unexpected duct repairs. The tape is a quality product made by 3M that has good thickness and adhesion. I have no complaints as it met my expectations. I would recommend this product to others.
P**Y
Work just great. Easy to use. Great price too!
Used this along with insulation wrap, as others did, to wrap the output hose of a portable air conditioner. Until I did this, the device was pretty much useless because the hose radiated so much heat that it negated the effect of the air conditioner. Fastened the insulation in-place with this tape. Working just great! NOW the air conditioner actually COOLS the space! I did not rate "easy to remove" because it's not intended to be removed easily. It can probably be removed fairly easily however, depending upon what you stick it to, but I didn't rate this.
J**G
Quality and Cost
Quality and Cost and Ease of Use are a plus for this Foil Tape
J**H
Works well.
Worked great for a dryer duct.
W**M
The Best Tape
3m makes the best tape. holds in all types of temperatures
J**O
This stuff is never coming off
Used this stuff to seal up some air leaks around the house HVAC system. Since I had so much left over I also used it to partially seal up some of the radiator opening on my car to get a little better aerodynamics and then also seal up the area around the radiator so anything that goes through the front grill has to go to the radiator and not bypass it. Multiple 80-100mph 4 hour road trips and this stuff is still hanging on just fine. whatever kind of stick goop they put in on this tape is going to take an act of god to get it off my car if that time ever comes, but till then this stuff is doing exactly what it's supposed to.
N**.
useful
great product
P**S
I found so many gaps in my venting that needed taping and with this I was not only able to seal those gaps but also improve the heat distribution too.
A**A
La uso para hacer resistencia y si soporta la temperatura
M**W
Fantastic tape
C**O
lo utilicé para forrar una caja y me gustó mucho la calidad del pegamento, puede ser un poco difícil de manejar por el aluminio que es algo delicado, pero los resultados y la calidad son evidentes.
N**E
it sticks and seals
Trustpilot
3 days ago
1 month ago