






💪 Seal it, fix it, forget it — the ultimate underwater repair putty!
JB Weld WaterWeld is a high-strength epoxy putty that cures underwater in 25 minutes, creating a durable, waterproof bond with 1300 PSI tensile strength. Compatible with a wide range of materials including metals and plastics, it resists chemicals and fluids, making it ideal for plumbing, marine, and emergency repairs. Proudly made in the USA, it’s the go-to solution for professionals and DIYers who demand fast, reliable fixes that last.








| ASIN | B000BRQ0TW |
| Best Sellers Rank | 3,700 in DIY & Tools ( See Top 100 in DIY & Tools ) 11 in Waterproofers |
| Brand | J-B Weld |
| Colour | cream |
| Compatible Material | Fibreglass, Metal, Plastic |
| Container Type | Syringe |
| Customer Reviews | 3.9 out of 5 stars 12,635 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| Full Cure Time | 60 Minutes |
| Global Trade Identification Number | 00043425082770 |
| Included Components | J-B Weld Waterweld Putty 57g (2oz) |
| Item Form | Putty |
| Item Package Quantity | 1 |
| Item Type Name | J-B Weld Waterweld Putty 57g (2oz) |
| Item Volume | 59.14 Millilitres |
| Item Weight | 0.07 Kilograms |
| Item form | Putty |
| Manufacturer | JBWeld |
| Material | WaterWeld Epoxy Putty Stick |
| Model Number | 8277 |
| Other Special Features of the Product | Cures under water |
| Special feature | Cures under water |
| Specific Uses For Product | Casting, Countertop, Flooring, Glass, Masonry, Repair, Table Top Coating, Underwater Repair, Wall Repair |
| Specific uses for product | Casting, Countertop, Flooring, Glass, Masonry, Repair, Table Top Coating, Underwater Repair, Wall Repair Specific uses for product Casting, Countertop, Flooring, Glass, Masonry, Repair, Table Top Coating, Underwater Repair, Wall Repair See more |
| Tensile Strength | 1300 Pounds Per Square Inch |
| UPC | 043425082770 |
| Unit Count | 57.0 Grams |
| Viscosity | High |
| Water Resistance Level | Water Resistant |
A**W
From the original JB Weld company
Have picked this item before as I've used the original JB Weld and with good results. I am a returning buyer and this item being very good in comparing market. It has very good bond strength and sets hard after a few hours. Tip! use gloves and have a small amount of water to wet when mixing.
L**E
Works well.
Good bond to my waterbut. Needed to seal the input drain pipe that was leaking. Fixed it with this. No leaks, does need a bit of working to get it right and takes a good while to cure. But decent product overall.
P**.
A good quick fix waterproof putty
This worked very well at sealing a crack in the white plastic waste pipe from my gas boiler, it was dripping constantly, it can be a bit messy, next time I will wear gloves.
T**S
Not very good in wet conditions
When it's wet it becomes slippery and you cannot apply it correctly, will never buy again
I**S
Get some - really works well
Bought this in a last ditch effort to fix a leaking soil pipe. Leak was caused due to a split in the pipe where someone one had bodge fitted a junction from the shower waste pipe into it. The nuclear option i.e removal of the soil pipe would have caused significant disturbance to the bathroom. I packed this around the broken junction which was quite inaccessible. This stuff is super sticky when mixed and you have to accept that your hands will be covered in it by the end of your job (clean off with isopropyl alcohol). Takes about an hour to go fully off…. But it worked and it stopped the leak. Dries rock hard. I made sure to rough up the area first with sandpaper and clean it with isopropyl alcohol. Very happy with the results. Would use again
F**Y
Small repairs only.
Not impressed with this product. It is not difficult to use but I would only recommend for very small, dry leaking points. Applying to larger leaking/wet areas does not work well in my experience, even though it says it sets under water.
S**S
Brilliant stuff
Brilliant stuff, but worth watching some U-Tube videos first on how to apply it.
A**R
It works - mostly
Nothing else I tried worked. This stopped a leak from a water butt whilst the water was still spurting out. This helped save me a lot of money, when other things didn't work. - Edit - whilst initially working once it dried out it fell off after a couple of weeks. It may need some tape to hold it in place. It still worked better than other attemps.
Trustpilot
2 days ago
2 weeks ago