3M High Temperature Flue Tape, High Heat Sealing Tape up to 600 degrees, 15-Foot Roll

I use this to seal leaks on my portable air conditioner and it holds up really well all season. Every year when I take the AC out of the window I just replace it. Does exactly what I need it to do.

The most important thing to know is this is a very specialized product made to withstand higher temps than the more common "200 degree foil tape". Therefore you should expect some tradeoffs: this comes in a much smaller roll than the 200 degree stuff. It will work BEST on flue seams, where it will stick to itself and reasonably clean exhaust piping. If you have a "special use case" be aware this may not stick so well. My special use case was to "wrap" fiberglass insulation that wrapped pipes immediately coming out of my oil boiler. Because I'm using it for something it's not designed for, I can't knock points off. Anyways: I chose this because you are not supposed to wrap pipes with insulation close to the boiler, if that insulation is at all flammable. The cheap "foam noodle" will easily burn, and so will the nicer paper-backed fiberglass pipe insulation. The fire code restriction ends after 12 inches from the flue so DO NOT use any "plastic wrap" around fiberglass closer than that!. Anyways, this "worked" to let me put a surface and seal the insulation, but it's not meant for that and looks a little irregular. :-) Another good use: put a square of this stuff on a flimsy plastic parking pass that hangs off your mirror. The added weight is perfect to keep such things from flapping around in the wing. Tape a few pennies if you want even more weight.

Why did you pick this product vs others?: Perfect for pellet stove pipe that leads to outside my house. This tape just seals and covers the seems to keep smoke out of the house.

It's aluminum high-heat duct-tape. Sticks fairly well, easy to use.

I used this to tape my oven door back together. The handle couldn’t be fixed and landlord was no help so I tried this and it worked to keep the oven door from comping apart when the handle would come off. Used it over the top and inside of the door and haven’t seen any problems with oven temp at 425

Been just buying what I need once in a while. Yes, per foot expensive, but cheaper than buying a big roll. 3M quality can't be beat!

I bought this because its "adhesive" is rated to 600 degrees, and 3-M has pretty reliable and excellent products, especially when it comes to adhesives. However, the adhesive on the back of this common aluminum foil is about the stickiness of a 3-M post-it note. It didn't adhere to my stove pipe, and it didn't adhere to itself. After several fires, I checked this area, and the "tape" was crinkly--not sealed at all. Really, not better than just using aluminum foil. Maybe 3-M shouldn't hype the adhesive so much. I had high hopes, sadly!

This 3m flue tape works well when sealing around the stove pipe. i used it during a recent chimney repair, and it held up nicely even with the high temperatures. the 15-foot roll is handy and lasted through my project. if you need something reliable for heat sealing, this tape gets the job done without any fuss. glad i chose it for my needs.

Very good and very resistant, i used it to seal a broken electric oven door gasket.

great

I had a small hole in my kerosene boiler’s flue which needed urgently sealing. I carefully cleaned the surrounding area with isopropyl alcohol and applied two strips of the tape in a ‘+’ shape across the hole. Despite the tape being rather thin and I do wish that it had been thicker, the repair has both worked and importantly remained attached.

muy importante para prevenir fugas de humo

This was delivered fast and is just as good as the big names, great price and great product!