We have a plastic holding tank
(PE) onboard where the discharge fitting mounts on the bottom (gravity emptying system).
It previously had a metal thruhull on it, but it was corroded badly and leaking so I removed it. All the other fittings are plastic.
I’m left with a hole (made by a hole-saw), where I need to mount a new fitting, preferably plastic, and I need to know the best way to seal it.
In the Todd fitting relocation kit instructions they say I can simply use silicone on it. Is that the best idea?
Preference for type of fitting? I have a 1 1/4” tru-design valve I would like to screw back on the fitting.