There can be a rubber disc gasket, or sometimes just plumbers putty. If that is where the leak is/was, I would disconnect the drain. Then take that fitting apart and re-install with a good bead of plumbers putty. Tighten the nut tight enough to force putty out and then trim it off.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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