Features:

  • CURES FAST – One-part adhesive sealant requires no mixing, typically cures within 48 hours so you can get back on the water faster
  • USE WHAT THE PROS USE – Extremely strong adhesive sealant retains strength above or below waterline
  • BONDS PERMANENTLY – Ideal for sealing, bonding and attaching on the interiors of boats and RVs, or on exteriors below the waterline and where shielded from the sun
  • LONG LASTING FORMULA – Tough polyurethane polymer resists weathering and salt water
  • WON’T CRACK OR PEEL – Stays flexible, retaining strong bonds even during vibration, structural movement or shock
... 5200 for the last 30 years and is the best bonding and sealant out there

I have been using 5200 for the last 30 years and is the best bonding and sealant out there. I use this product no only for RV's and Marine Applications but I use it for weight lifting equipment to bond rubber to steel and use it bonding urethane and Teflon to steel and to powder coating finishes and you cannot tear this off, not even with a rotary hammer. I use this when I want a tight permanent bond, once this is matted with whatever you are bonding and it cures, your parts will not come off..

Works very well if directions are followed.

Works extremely well and is permanent if directions are followed. I am not sure I have used an adhesive that has worked as well. I was repairing a marine grade plywood floor in a 1985 Checkmate. It bonded and sealed well in the two spots I needed to remain watertight. I used it when mating up the patch piece of plywood and put some in pilot holes before drilling in the SS screws. Very pleased. As a suggestion - it is considered one time use. If you tightly seal the lid and put in a ziplock back and put in freezer - you can get multiple uses out of it.

Also an excellent alternative/substitute for pricey 3M Channel Bonding Adhesive

I was looking for an alternative to the $30 channel bonding adhesive, a two-part urethane used on windshields and windows. I needed a very small amount and din't like the wastage and cost. This is very similar and works great for this application if you need a cost effective, flexible but strong urethane adhesive. Afterwards, put it in a baggie in the freezer and it will keep it from curing and wasting the leftover.

Super great product.

I lived on a sailboat for years. I have used this product and it's slower brother since 1991. It's better then fine it's Grrrrrat. Remember once your opened the container the remaining product will harden.I used to buy large caulking gun tubes, now I buy several small tubes at a time.

Works great for repairing leaks!

This worked perfectly for what I needed. My windshield washer fluid tank on my Jeep was leaking from the bottom where the seam had split. I was planning on replacing the whole tank. Was going to take time and a good amount of money. But I ran across this stuff and figured I’d give it shot. Not really expecting it to work. Well I was wrong. It was super easy to apply. And I filled up my tank with water and it’s been going strong for about a week now with no issues. I’m very pleased!

5200 is great stuff

Used to re-bond harmonic balancer outer ring to rubber liner. Worked great. Can't beat 5200 if you need to make things stick together, stay flexible, and waterproof. Ordered white, got black... not like it makes a difference for my use. deliver was fast, package undamaged

You need this stuff on your boat.

Great stuff. I bought it for a crack in my shower floor and it worked great. A few weeks later we bought a new swimming pool. The liner had a pinhole leak. I definitely didn't want to drain it and go through the hassle of returning it so I remembered the 5200 and daubed a little on the hole under the water. It sealed it up perfectly under water, just as advertised. A real lifesaver.

I can't believe it worked!

Our windshield wiper fluid hose got a hole in it somehow and instead of buying a new hose (which would have been cheaper and made more sense) my husband found this and was like, "This works on boats, so it should work on this" and bought it... At first I was thinking, "Okay, go ahead and experiment with it and then we will get you a hose later when you're pissed off that it doesn't work" but it worked!! Follow directions when you use this thing. It says to wait at least 24 hours (I think) and he waited about 23 and tried it and it didn't seal it. But then he did it again and used 2 layers and it's been perfect. No more leaky wiper fluid!!

Magic

While we were replacing the subfloor in our bathroom, the water basin on our toilet cracked. We were trying to keep the project as under budget as possible, and a new toilet would have broken us. I scoured the handyman resources of the interwebs, and found a forum, and specifically, someone asking for advice - what to do with barely cracked porcelain on a toilet. The responses were less than reassuring. The overwhelming majority of the advice-givers recommended buying a new toilet. One lone person chimed in, possibly as a joke (?) "use the 3M for boats." Hmmm.... 3M for boats... but, could it work? I bit. I ordered a tube, and in preparation for the big (little) delivery, we dried out the back of the toilet with towels, and then blow dried the ever living heck out of it. It was a veritable desert for 2 days. After we received the product, we covered the porcelain crack that was long but not wide. we covered both the inside and outside of the basin. We layered it on until the caulk was 1/2 inch thick on both sides of the basin. Then, we waited, with baited breath. Was it going to work, or did we just spend $10 that could have gone to buying a new toilet? Only time would tell. Fully 72 hours after applying this magic goop, we checked the outside. It felt solid, not that putty texture that most caulks have, but a solid sheath of hard plastic, like a toy you did not buy at dollar tree. We clenched our teeth and filled the basin. The first day, no leaks, and we were optimistic.The second day, dry as a bone on the outside of the toilet. It has now been 2 months since our jimmy fix was made, and nary a drop of errant water outside the basin. I would hesitate to use this for a basin that's broken in pieces, but I'm not entirely convinced that it couldn't hold together a deeper, wider, or longer crack.

Fixed my underwater pool light

I have an underwater pool light that kept leaking in the back where the cord goes into the unit. I tried everything to seal that but nothing worked. I was getting ready to buy a whole new unit which is not only expensive but a pain as you have to pull the cord all the way through the conduit and pray it doesn't jam somewhere in the middle. I came across this and thought it would be worth a try and I'm glad I did!

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