gray tank outlet drain leak

Had both my grey water and black water tanks develop leaks at the flange. The reason was that the brackets holding the drain pipes and waste valves broke and the pipes bounced around without support until I noticed it. When filled with waste, those pipes are heavy and can really pull on those tank flanges.

So first, make sure your drain pipes are well supported.

Then I emptied the tanks and let them dry. Cleaned the area with sandpaper, trying to get in crack. One I could, the other was just a hairline.

I used a first coat of ordinary yellow ABS solvent in/on the crack, then thin sections of abs pipe glued on to reinforce the joint (that fibreglass mesh idea sounds good too), all then covered with solvent with bits of black abs pipe (file shavings) mixed in to form a thick goop that I just spread on.

So far so good. The grey repair has traveled > 10K km, the black I just did.

About three years ago I had a slight seep on my ABS drain at the outlet on my 94 Sunnybrook.
It was just a small hairline crack. A little sandpaper and solvent to clean the spot and some JBWeld did the trick, hasn't leak since.

Plumers GOOP stays flexible and sticks to all plastics.

I use a plastic sheet to mix J-B weld and it just flakes off of when cured for easy cleaning.

Just looked up the sheet on JB Waterweld which could work too but since it is an epoxy base I would suspect it would be less flexible. I have only use the GOOP for this type of application. I use the standard J-B Weld for other repairs and like both products.

Im glad this was posted as I just noticed that one of my fill lines to the fresh water tank has a small leak. Which product would be better, the JB Waterweld or the Plumbers Goop? The line I am working with is a little flexable if that makes a difference.

I patched a water leak in ABS pipe that would have been a very difficult fix without ripping out a cabnet.

I cleaned the area with alcohol and use "Plumers GOOP" over the crack and joint in the pipe. It has been over two years now and hasn't leaked again. Just be sure it is Plumber's GOOP and not some knockoff.

Link to what to look for!

My old camper had a leak I ended up using 2 part boat epoxy.Got it at auto store. Some very good stuff.Used it on other things aswell

Thank you. Will look into these products.

There are products like Waterweld that might work.

If you can see and access the area, ABS solvent and fiberglass mesh should make a permanent repair. Check out AP Products 27306 or get the supplies in the plumbing section of a hardware store. Worked on my SunnyBrook.