Good Sam Club Open Roads Forum: JB Weld or ? Quick Water Tank Fix
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 > JB Weld or ? Quick Water Tank Fix

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Bert the Welder

Van. Island

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Posted: 08/28/20 12:39am Link  |  Quote  |  Print  |  Notify Moderator

And the JB Water is for potable, according to their list. I've used other JB products and it's pretty impressive.


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surgtech56

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Posted: 08/28/20 05:26am Link  |  Quote  |  Print  |  Notify Moderator

[image]
Is 3m Panel Bond what I should use. Since the leak is on the threads and the fitting into the tank? I saw something called Seal N Place too. I am not savvy enough to bypass the tank with the water jugs. Thank you

SpeakEasy

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Posted: 08/28/20 06:30am Link  |  Quote  |  Print  |  Notify Moderator

How bad is the leak? If you go out for your final camping trip, and the leak causes you to lose all your water in the first afternoon, that's something that would need attention. If it's just a few drips, and you'd lose a few gallons over the course of the weekend, that's a whole different story. You could probably even put a pan under the leak and recover the lost water if it was slow enough.

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eHoefler

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Posted: 08/28/20 06:44am Link  |  Quote  |  Print  |  Notify Moderator

Marine-Tex


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dougrainer

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Posted: 08/28/20 07:20am Link  |  Quote  |  Print  |  Notify Moderator

On your type material tank, NOTHING will bond. The only fix is plastic welding. That said, from your pic(blurry), it appears the fitting itself has cracked on the threads. If so, You can use a plastic epoxy and apply liberally to the inside on the threads and on the screw in fitting and install the fitting. Usually that will bond enough to prevent leaks. IF the leak is on the flange of that fitting, plastic weld is the only way to go. The reason JB weld and other glues do not work in the long term is, The tank flexes and expands and retracts when water is filled and used and the tank empties. THAT causes any patch to eventually come loose. Doug

BurbMan

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Posted: 08/28/20 08:26am Link  |  Quote  |  Print  |  Notify Moderator

dougrainer wrote:

On your type material tank, NOTHING will bond. The only fix is plastic welding.


Not true! I found this JB Weld Plastic Bonder that will bond to thermoplastics, including polyethylene like this water tank. This is available in most big box stores by the glue.

[image]

***NOTE that Loctite also makes something called "Plastic Bonder" and it WILL NOT WORK.***

***JB Weld also makes a "Plastic Welder", this also WILL NOT WORK.***

The previous owner of my truck camper cut a big section out of the propane compartment liner trying to fix some water damage. I used 3 tubes of the JB Weld Plastic Bonder to seam it back to back together and it's strong as new.

[image]

It's hard to see from the pic where the OP's water tank is leaking but sometimes if it's in the thread an extra-heavy wrap of teflon tape can work temporarily.


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Baja Man

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Posted: 08/28/20 09:03am Link  |  Quote  |  Print  |  Notify Moderator

I had a similar leak at the plastic fitting to tank connection. PO thought the hex nut looking plastic head of fitting could actually be tightened to connected water shut off valve! It is a hex head but can not, and should not, be turned. Spin welding was used to install it from tank manufacturer.


How I repaired:

I purchased THIS welding kit. I welded it using the plastic pieces included in the welding kit. This was repair was made over 8 mos ago and hasn't leaked a drop. Simple, on the cheap, and has worked flawlessly.


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time2roll

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Posted: 08/28/20 09:42am Link  |  Quote  |  Print  |  Notify Moderator

If the threads are leaking... use Teflon plumbers tape.


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surgtech56

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Posted: 08/28/20 10:20am Link  |  Quote  |  Print  |  Notify Moderator

Baja Man wrote:

I had a similar leak at the plastic fitting to tank connection. PO thought the hex nut looking plastic head of fitting could actually be tightened to connected water shut off valve! It is a hex head but can not, and should not, be turned. Spin welding was used to install it from tank manufacturer.


How I repaired:

I purchased THIS welding kit. I welded it using the plastic pieces included in the welding kit. This was repair was made over 8 mos ago and hasn't leaked a drop. Simple, on the cheap, and has worked flawlessly.


Thank you. Going go get one of these

surgtech56

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Posted: 08/28/20 10:25am Link  |  Quote  |  Print  |  Notify Moderator

Thank you everyone. I bought some of the JB Weld stuff and going to go to Harbor Freight and get the plastic weld kit too. I’ll see what happens. Got a quote from a local RV place of $500-$2000 for a new tank. We’ve been thinking about downsizing from a 23ft(10 years old) to 16-18ft, this might be our sign. I’ll keep you posted on the repair thanks again appreciate the great help

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