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🌊 Seal the deal with MarineWeld — the ultimate waterproof fix that won’t let you down!
J-B Weld 50172UK MarineWeld is a high-strength, two-part epoxy adhesive designed for permanent repairs on multiple materials including metal, wood, and composites. It cures white, sets in 20 minutes, and fully cures in 15-24 hours, maintaining full strength even underwater. Resistant to water, chemicals, and UV, it’s ideal for marine and outdoor applications requiring durable, waterproof bonding.














| ASIN | B00R2CDVIW |
| Best Sellers Rank | 7,665 in DIY & Tools ( See Top 100 in DIY & Tools ) 71 in Universal Adhesives |
| Brand | J-B Weld |
| Colour | White |
| Compatible Material | Fibreglass, Metal, Plastic, Wood |
| Container Type | Tube |
| Customer Reviews | 4.2 4.2 out of 5 stars (2,714) |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00043425501721 |
| Included Components | Glue |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | "MarineWeld" Waterproof Adhesive, White, 25ml |
| Item Volume | 25 Millilitres |
| Item Weight | 2.1 Ounces |
| Manufacturer | JB WELD LTD |
| Manufacturer Part Number | 50172 |
| Material | Aluminum,Wood |
| Model Number | 50172 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Strong, Waterproof |
| Specific Uses For Product | Marine, Watercraft Repair |
| Tensile Strength | 3200 Pounds Per Square Inch |
| UPC | 043425501721 043425700162 |
| Unit Count | 25.0 millilitre |
| Viscosity | High Viscosity |
| Viscosity Level | High |
| Water Resistance Level | Waterproof |
A**R
Really good product
Snapped my toilet where the lid goes on and plan to refurb bathroom so decided to try fix it for now. Didn’t think it was going to work but it has! Brilliant Full set time 24 hours Could probably carve back neat
I**S
Superb - best waterproof/outdoor two part glue/filler on the market.
The best glue/filler of its kind, this stuff cures rock solid, with decent work/cure time, and easy to use. Recommend you mix in small quantities, as it sets quickly and becomes lumpy in doing so, if you keep trying to mix it. Superb at its “job”, though, especially for water features (this was a repair to my mother-in-law’s broken water feature, results are perfect!).
C**Y
does not work on all surfaces, smells awful but does work well on others.
I will explain what i bought it for, how it worked, or not, and what I mean by the smell..... I bought this to fix the loo seat onto the loo and it sort of worked... the loo seat is strange, unlike the usual nut/bolt to hold it onto the loo, it has a hexagonal plastic head with a thin body that goes through the fixing hole and a plastic bottom to stop it pulling through - all one piece. This hexagonal head then slots through a slot on the bottom of the loo seat and has a rubber suction foot which also works to stop the hexagonal head sliding out of the slot on the loo seat. with me so far... OK, SO I tried super gluing and all sorts before resorting to epoxy. having use epoxy before I wanted a waterproof one so that the loo seat could still be cleaned regularly. This product did not stick at all to the rubber foot, which I had decided needed fixing as it had split. This product did not stick at all to the ceramic base of the loo ( glossy surface) it set and popped right off. This product DID stick to the plastic hexagonal head and the inside of the slot on the loo seat ( plastic). so - the loo seat is attached a gain, and if the epoxy holds, I do not need to worry that the rubber foot being split will let the hexagonal head slip out, as it is firmly stuck in place ( for now) I am surprised that it did not stick to the rubber foot, I have used epoxy to stick rubber to glass before and it worked well, perhaps rubber to rubber does not create a good bond? and finally - the smell - oh the smell. Epoxy has always had a chemically smell and sometimes a slightly fishy smell, but this stuff has a really really strong and unpleasant mix of rotten fish and burnt hair - really bad, it took 2 days of having the bathroom windows open to get it out, although it was much less strong the second day, but fair warning - using it indoors is probably not what they had in mind for this stuff and you pay the smelly price for it. I hope this helps.
A**R
Used in bathroom
Did the job well, fixing a handle in my bathroom
W**U
Ok
Not durable, had to seek alternative
A**R
Excellent
Motorhome shower plug hole cracked and this sealed it good matching the colour well too
A**W
Does not fulfil its stated uses
States that can be sanded and drilled after full cure, but in reality has the consistency of silicon sealer (soft rubbery feel even after a 24 hours). This means even with a gentle sand it starts to come away. I would only use it to seal in none visible areas to save getting a mastic gun out. I personally wouldn't rely on this product for marine bonding either. may be handy for small leaks and temporary fixes
Z**E
So far so good on my 100 yr old toilet cistern
This stuff is fabulous, my 100 year old toilet cistern bell lever snapped and following screwing the cast iron together I coated the outside of the join for address strength and make it water tight. It was easy to use and hardened fast. I didn’t need to file it as it won’t be seen. Great product, hopefully has saved my cistern!
E**S
Muy buen pegamento flexible y a prueba de agua, seca muy rápido toca probar su durabilidad
H**S
I got two packets for an important project. When we opened one, one of the tubes was completely solid. Not to worry, I had an extra one, right? Wrong! That one was also in the same condition. So now we are delayed by a week at least until we get another suitable product, not to mention the financial losses .
T**U
As described. Great for wet areas.
K**G
Works really well, but is finicky to mix...mix too much, and it hardens before you can get it on what you want to glue, mix too little, and it never sets. You will probibly use 1/4 of the tube just getting used to it. After it dries, you can carve it with a sharp knife, or sand it with FINE sandpaper, I used it to fill the chips in a ceramic white cookie jar, feathering the edges with a wet finger just before it hardened, then carefully shaping with an exacto.
A**R
One side dried up solid..
Trustpilot
2 weeks ago
2 weeks ago