Review on 🔧 Permatex 80335 Muffler and Tailpipe Sealer: Ultimate 3 oz. Solution! by Josel Lambert

I was rebuilding part of my exhaust and I had two flanges that didn't fit together like they should leaving a small gap at the bottom. It wasn't enough to cause an audible exhaust leak, but condensate ran out. I figured an exhaust sealant would be a quick fix as opposed to re-installing and re-welding the flanges. I was a little dismayed when I received the product and found that it wasn't epoxy or solvent based so I wasn't sure how effective it would be. I went ahead and tried following the directions and it worked fantastic. It goes pretty smoothly - it kind of comes out as a drop, but it's easy enough to turn into a nice ball. It's obviously made out of some type of clay, but it works like magic and sets almost like super smooth cement. I don't think this will happen any time soon. The instructions are something like this: Wet the area, apply product, wait 30 minutes, start the engine and let it run for 10 minutes. You'll be good to go in a few hours. I would definitely buy it again.