3M Urethane Seam Sealer, 08367, Black Color, High Solids, Permanently Flexible, 310 mL/10.5 fl oz Cartridge

About 6 yrs, the rear window in my 2016 Audi soft top had the bottom seal fail and open about 1/8 inch. I did not notice it. We had 3 weeks of frequent storms, it was parked outside, and water leaked. Repairs cost ~$9500. I have paid more attention to the new software top. About 3 years ago, the bottom seal started to fail. I bought this 3M sealant and it continues to hold up well. Recently I noticed the top seal beginning to fail. I used the same sealant to repair it. I apply blue tape on the window. Immediately after application, I pull the tape off to get nice sealant "lines". I spread an initial bead with a caulk gun, then wear gloves to smooth it to a nice application. Then I use special squeeze devices to put pressure on it.The sealant is easy to use. Good stuff. And the price is reasonable.

I turned a spare wheel well into a tool box in the rear of my car using aluminum panels and needed something to seal it all, and connect a few large gaps. This flows incredibly easy out of the tube and can be manipulated to any shape you need. It adheres very well to surfaces, and is a perfect consistency to flow/fill gaps while also staying in place while wet. It took longer to dry than the instructions state, but I have no complaints with that. Once dry it hardened completely and looks amazing, sealing all water out. It filled some large gaps with ease and has held up incredibly well. Will definitely use this on my next project.

Emptied this into body seams in a hood that was vibrating on the underside supports. Has great working time for clean up and just the right amount of flow for a caulk g(u)n delivery at home. dried great and works like a champ. Great alternative to the 2-part sealer that needs the special tool to apply. Just make sure it's the flexibility vs hardness level that you need for your project.

After my Toyota FJ roof got a re-spray. I had to install the roof rack back but before I had to prep the rain gutters to make sure it's clean and ready for the roof rack install. I used the 3M 08362 Gray seam sealer to blend with the color and protect the seams within the rain gutters and surrounds of the roof rack bracket so no water will come in (worst thing to have roof leaks and a wet headliner). I left it to cure for 24 hours before I started to take the painters tape around them. I added more sealer in some areas and cut some out to clean things up. I'm very happy with the results and very confident that it will do it's job.

Used this to seal body panel seams on my project car—great consistency and easy to tool. The black finish blends in nicely and doesn’t crack or peel over time. Holds up well against vibration and moisture. Reliable product that delivers professional-grade sealing performance.

Yes it is pricey, but 3m always delivers the quality. I have and will purchase again.

Worked great, got about 25' of a heavy bead per tube. Bought 3 tubes, only came with one tip. Plan on using a full tube at a time, so I can clean out and reuse the tip. But if you are planning on 1:1 tip/tube, may not get it.

The urethane seam sealer is top-notch! It’s easy to apply, provides a strong, durable seal, and holds up well over time. Perfect for auto or home repairs. Highly recommend!