Dometic 320 Toilet Leak

[chemist308]

I installed a Dometic 320 toilet about a month ago. Just yesterday it stopped holding water. I do the half fill, come back half hour later and the bowl is dry. Tried cleaning it really well, cleaned the seal, pushed the seal down well against the plastic slider and added hot water—none of that works. Any ideas how to fix this?

Also from day one if I fill the toilet completely and flush a small leak from the base occurs. It’s seated correctly. This only happens when toilet is completely filled then flushed a couple times. Any idea what to do there?

[egwilly]

Similar thing with ours when I installed my 310 new from the box.

Ended up getting a replacement/refund. The second one works fine. Bought from Amazon, they told me to keep the first one.

Mine leaked from the seal inside that the shaft connects to, and the flush valve leaked, and a screw was missing that mounts it.

Sounds like you've done all the right things to correct it.

[Old-Biscuit]

Warranty time!