J-B Weld WaterWeld

Tiny crack on a brazz nozzle in the garage needed mending. It's an old school, solid brass part so replacement is expensive and it hooks up to a water hose in the garage so I didn't want to waste money. Bought this on a whim, followed the simple instructions, put a layer over the crack and voila....it's fixed and holding up nearly five months later. Wear disposable gloves when working with this. It's a bit of a pain to take off after contact with the skin.

For some reason, I needed to put on several coats to stop a leak in water container, but I got it done! You need to really mix well as the center mix seems to be lacking and the mixing gets more on your fingers than where you will want to put it. I waited a day or longer between coats for it to fully dry before I water tested. It kept leaking ever so slightly finally got it on my last coating! I cleaned, sanded and cleaned again before applying epoxy...

It always works for me on pvc and it lasted for a few years

I used this to seal around a pipe where it enters the concrete slab a plant was growing in it. I used it to help keep water, insects, and debris out. It was easy to apply, adhered well, and cured nicely. The finished result looks clean and has held up great so far. It did exactly what I bought it for. I would definitely purchase it again for similar projects around the house.

Works great on my 350 gallon water hauler. I had a 3 inch Crack at the very bottom of my water tank. It leaked about 150 gallons a day. I used the JB water sealer, and it hasn't leaked a single drop. So far so good. Mind you, the Crack is at the very bottom of the tank, thats where 350 gallons of water weight/volume is, and it been about 3 weeks, ambient temperature here in Arizona is 110. Not a single drop. Definitely worth having around.

Purchased this to try to seal off a leaking PVC joint (1.5" ) on the return side of my pool equipment. I had low hopes as I've also tried a different brand of two part epoxy, but with the good reviews, thought maybe this was a superior product. After kneading it together, I applied it to the joint, completely surrounding the circumference of the joint and firmly pressing it in. Note that the joint (outside) was dry at the time. I let it cure for about 8 hrs (PHX, temp between 60-80 F during that time), and it was pretty thick as I used the entire tube, and was more of a brighter white (than off white). I pressed on the epoxy and it was "crusty" but still a bit pliable as I could push on the thicker parts. Once I turned the pump back on, the epoxy had not bonded to the PVC, and so the leak was not stopped. What is even worse was once the epoxy was damp again, it began to soften up even more and had no adhesion to the PVC anymore. Literally, I peeled it off like it was a casted mold. I can't imagine trying to get this product to set while under water. Maybe this is not specific to this brand and this product would work better on a different material, but on PVC piping, it was a complete waste of money.

This stuff is great! The surface does need to be dry in order for it to work. I used it to patch a corner of a screen door where the metal edge had rotted away and the wood core was exposed. Once it’s dry, it’s pretty much indestructible. One thing - if you are going to sand it, do it after the first half hour to an hour. Or else it becomes way too hard.

It definitely hardens underwater, but I needed it to stick underwater to a plastic drain. It didn't seem to have enough stickiness to do so unfortunately, it just fell off in a big chunk.

Ich habe den J-B WaterWeld Epoxyd-Kitt für meine Pool-Filteranlage benutzt, weil am Deckel ein Riss war und ständig Wasser austrat. Obwohl die Anleitung nicht auf Deutsch ist, war die Anwendung absolut selbsterklärend: Stück abschneiden, kneten, auftragen – fertig. Meine Erfahrung: Sehr einfache Anwendung, man braucht kein Vorwissen. Nach dem Aushärten absolut dicht – 100 % erfüllt, was ich mir erhofft habe. Ideal für Notfälle im Pool- oder Sanitärbereich. Wichtig zu wissen: Das Ergebnis sieht nicht unbedingt schön aus, eher wie ein grober Flicken. Wer Wert auf Optik legt, sollte das bedenken. Handschuhe sind Pflicht – das Material klebt stark und ist schwer von den Händen zu bekommen. Fazit: Der Kitt macht genau das, was er soll: abdichten. Für mich hat er ein teures Ersatzteil gespart. Klare Empfehlung für alle, die schnell und zuverlässig etwas reparieren wollen.

Works as advertised. Easy to use and waterproof.

Great product works on my hottub jets as they are expensive to replace and water weld works brilliantly.

Just what I needed

100% recomendado para aplicaciones de reparacion de sanitarios. En mi caso en particular tenia una fractura en un costado del tanque de mi sanitario y tras vaciarlo y secarlo pude aplicar el producto y detener la fuga de agua. En principio tuve problema para adherir la plastilina a la ceramica, pero conforme fue endureciendo pude hacer una excelente aplicacion ahorrando un sanitario por una pequeña fraccion del costo del producto JB !