3M Marine Adhesive Sealant 5200 - Permanent Bonding and Sealing for Boats and Marine Applications - Black - 3 Ounces

Great product! Works great! Highly recommend!

Best adhesive I know of for sealing and bonding at same time. Cures hard and resilient. It is my go-to if I want it waterproof and securely bonded. If you might have to remove it later without cutting, use 3M 4000. I always get this size, small size tube is way overpriced. It is gooey and gets on every thing so wear gloves and keep mineral spirits solvent handy to remove any smears.

I use this product daily as a marine mechanic Just apply and clean up with acetone

Good stuff

Works great Takes forever to dry (defiantly not 3! more like 4-days -1 Star*)!! I got mine with the tip!! No holes, came just fine!! Stuff is great!! Strong with a little flex to it. Think caulk with strength..For the reviewer talking about the tip not working? ?Poke a hole in the end of the tube! You do have to cut the end off on the nipple you screwed on!! Also there is a pop top lip on the bottom, you have to pull that off as well. Looks like you figured that out ok? But Yes you do have to cut the tip off and ----> poke a hole in the end of the tube as well!! Before screwing the nipple on!!So here is a recap... Poke a hole in the end where the tip screws on and cut the tip off the nozzle a little at an angle and pull the pop top pull lid off the bottom. DoneP.S. Could have put my project together with just this no need for rivets as I was using Composite Aluminum Panels..

This stuff takes forever to dry but once it does, it is great; hard and robust and able to take a lot of abuse. I use it to repair mountain bike shoe soles and moto dirt bike soles (that are gouged because of the pegs).

holy crap this stuff is sticky and it will get everywhere if your not careful but it will definitely put a water tight seal on anything you use it on. I used it to seal some speakers in motorcycle saddlebags I have no worries that they will leak

Most importantly this stuff will not cure even after 2 weeks! I don't know why it's is so finicky but apparently the consensus is it most likely will jot cure for you either.I purchased this because some users online said it was the best permanent bond for rubber/neoprene muck style boots and waders. However, like other purchasers, this stuff generally will NOT cure. I googled it and read that just like many urethane adhesives it needs moisture for curing. I am now trying to add water to it and and set a damp paper towel over it to aid moisture curing and my first attemp a few hours later the water seems to have liquified it more. I did have a small portion cure but the majority of it has not. I tried squeezing out a glob like you do with epoxies and then stirred water into it and applied it to some rubber. The left over mixed with water spot has not cured after a few hours. Don't get it on anything you don't want it on because it's quite greasy like and is difficult to remove. It gets into small crevices and threads but does seem to be out with lots of scrubbing but generally leaves a stain.I am wondering if windshield adhesive would just be a better product for bonding and sealing.