Dometic toilet seal lube?

[tvman44]

I need to lube the seal on my Dometic toilet, the waste valve does not close all the way sometimes. I have cleaned the seal and that helped but now need to put a little lube. What have you'll used for lube on the waste seal of a Dometic toilet?

 

[bucks2]

I've used chassis grease on mine for the past 4 years. Rubber glove and smear a little on the ball and then on the rubber itself with a crooked finger. Works well for a few weeks. I have a water shutoff valve at the toilet so I do this without water cascading down.

I've tried the silicone spray, olive oil, CLR (calcium, Lime and Rust) remover, and maybe a half dozen others that I can't remember right now. The chassis grease works well, it's cheap, and I already carry it.

I also have carried a rebuild kit for the thing but it hasn't broken, got worse or changed in any bad way, so I just grease it every few weeks and the Mrs. is happy. I know it's not very high tech, but that's the way it is sometimes.

Ken