Toilet Seal

[Toytrain1]

Water will not stay in the toilet bowl

[NMWildcat]

Don't know what toilet you have, but most have a rubber seal that dries out over time. Either replace it, or try some plumbers silicone faucet grease on the rubber seal.

[KKonyha]

You can also use some vaseline in a pinch.

[NMWildcat]

Originally Posted by KKonyha

You can also use some vaseline in a pinch.

You could, but petroleum products will damage rubber products. Silicone products are always recommended for rubber.

[NMWildcat]

Another thought. If you are going to coat the sealing surface with plumbers grease, first, clean the bottom of the seal (the sealing surface) as well as you can. I usually use a wet paper towel with Dawn.
Oh, and welcome to the forum!!

[GolfingDave]

Don't rule out just cleaning it. Mine was dry this morning and I just leave enough in to cover the bottom.

Thru some vinegar in it to knock a little hard water deposits off although they were minor.

Cleaned the toilet and ran the brush past the seal a couple of times.
Holding water now. Think a piece of crud just was keeping the seal up some.

[Wiscampsin]

I replaced the rubber seal last year. Took about 5 minutes. Link:

https://www.youtube.com/watch?v=6sOHYWsYwjE

I got a 2 pack of seals off Amazon. I don't have a link but this is what I ordered for our Dometic toilet.

Sikawai 2 Pack 385311658 Flush Ball Seal Replacement for Do-Metic 300/310/ 320 RV Toilets