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Flush Ball Seal Gasket
Our rv toilet seal for Dometic 300/310/320 series rv toilet
- Enhanced sealing ability and wear resistance
- Advanced rubber material
- Quality surpasses OEM
- Accurate size design
- Long service life
Installation details:
385311658 RV Toilet Seal for Dometic
- 1.Shut off the water supply, press the flush pedal to keep the flush ball open.
- 2.Grab the underside of the old seal gasket and pull towards you to remove it.
- 3.Clean the rim and bowl area where the old seal used to be.
- 4.Release the flush pedal to allow the flush bulb to close.
- 5.Clean the flush ball.
- 6.Close the flush ball, put in a rv toilet seal and press outwards to ensure it is firmly seated.
- 7.Open and close the flush ball several times, then press the gasket to ensure it is positioned correctly.
- 8.Turn on the water supply, add water to the bowl and make sure there is no leaks.
Jim K
2025-08-10 14:42:05
I knew eventually I would need to replace the original flush ball seal gasket and intended to get a spare to have on hand. But before I could shop around, the seal in my Dometic 300 (Rockwood 2703WS) commode, the seal started to leak. I was surprise to discover that, in a metro are of over 1 million people, I could only find one RV parts store with the right seal in stock, and that one cost twice as much as these.After that experience I did some internet shopping around I found individual seal prices for the Dometic 300 series ranging from twice as much to more than 10X as much as these from RNTKAB. I went ahead and ordered these RNTKAB seals do to a comparison with OEM one I had recently replaced. I found no discernable difference, the new ones from RNTKAB are an exact fit, just as supple as the original and just as tough, if not more so. I went ahead and installed one of these seals and it did, in fact, perform as well as the original. And now I have a backup. Since my wife and I use our travel trailer quite a bit, 3-5 months on the road each year, I should have a good idea how well they perform with repeated use by the end of the year (now Jan 2025). Should they fail I will update this review
Rick
2025-06-30 18:18:48
These replacement seals were tighter than the previous set I had installed. This made installation quite a bit more time consuming and difficult, but that is compensated for by what seems to be a better seal. All together it took about 15 seconds to remove the old seals from two RV toilets, and about 8 minutes to install the new seals.Good function, quality and value in replacement seal for a dometic RV toilet.
steve fox
2025-06-07 14:02:49
Extremely difficult to mount this on the toilet. As often is the case with made in China products of rubber. Rubber in China isn’t as soft. I don’t expect it to last and is the reason I purchased two. So far it is keeping the water in the bowl and not leaking
MysterIe
2025-01-16 18:39:06
These flush-ball seals appear to be good. They're standard size for domestic, and at least initially they have a good deal.
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