RV Toilet Seal, Flush Ball Seal Gasket Replacement 385311658 for Dometic 300/310/320, High-Grade Rubber, Toilet Seal Parts Solve The Leakage Problem, 2-Pack

I was able to do this myself. It fit perfectly and replacing it was easy. Well made and didn’t leak.

Our trailer had a sewer smell and wouldn’t keep water in the bowl, found out we lost the seal, replaced with this super easy install and works great! 2 for $8, can’t beat that!!

The old seal had water mineral buildup on the seal. It leaked ... This seal is nice. And easy to install. (Leave the flapper in place [closed] while installing!)No I won't give it 5 stars.... It's a toilet seal.

The seal was a little more difficult installing than I expected but only because I was afraid of dropping it down the drain. Once installed it sealed properly eliminated smells seeping up while our RV was parked.

Tried using both seals. Neither would hold water. In fact, they were worse than the original leaking one I’m trying to replace. The new seals are a little bit narrower than the OEM, especially the grooved area. Just buy the oem and don’t waste your time.

Ever wonder why the bowl won't hold water? This new seal will fix that problem. Easy to install (wear gloves) and now the bowl will hold water again. Glad it came as a 2 pack, now I have a spare.

Shipped fast. Got the right product and they sent 2! Works great. Will order again if needed.

Our RV toilet was not holding water in it after flushing so something had to be done. We watched a couple of YOU TUBES for problem and this is what 3 of them suggested doing and they also showed the correct way to change these in the toilet. We got them from Amazon sense they had the right size for the type of RV toilet that we have. It took about 20 to 30 minutes for my husband to change them, but it was well worth it since now our toilet holds water after flushing. Thank you Amazon for having these for us and getting them to us so soon after ordering.