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Connecting ABS fitting to Holding Tank

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The fitting from my gray tank to valve cracked and my repair only lasted 6 months so I pulled the 3" to 1 1/2" concentric adapter from the tank that was glued to elbow and attached to the dump valve.  The adapter was attached via a white sealant of some type with two hose clamps around it.  I am trying to find what to use as the sealant around the fitting.  Thanks

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Posted (edited)

Two years ago I had mine apart. Since the white sealant did not get hard after 15 years, I used PTFE thread sealer, even though it was a slip fitting. I’m pretty sure that was what was used.

It was a chore getting the fitting back in the tank, even with the PTFE . Once I tightened the clamp, the fitting was secure.  If it was good enough for Monaco, it was good enough for me.  BTW, it is still tight and has never leaked.



Edited by Happycarz
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