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Old 08-15-2015, 12:27 PM   #11
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Join Date: Mar 2012
Posts: 142
My Sunseeker has a Dometic 310 toilet, if you have to replace the seal on this toilet it can be done without removing the toilet. Go to to download the manual. Good luck

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Old 08-15-2015, 06:33 PM   #12
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Join Date: Apr 2011
Posts: 51
Toilet water

The black seal around the opening is dry or worn. Turn off the water, dry the seal off and put some Vaseline around the under side of the seal. This should seal it enough to hold water.

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Old 08-16-2015, 10:55 AM   #13
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We drain each time but the anti-freeze makes sense. It's under a year old so luckily it should cover under warranty and they can fix it
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Old 08-18-2015, 09:52 PM   #14
Join Date: Nov 2011
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We have had the same problem. I used plain plumber's grease and it worked for a while. But you had to "flip" the foot leverThis last time I got plumber's silicone grease (because I couldn't find my old grease) and applied it to the edges as described above and also packed it down toward where I presume the hinge for the ball is and now the ball shuts more smartly and there is no leak after a seven day trip with seven people.

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Old 08-20-2015, 03:01 PM   #15
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That sounds GREAT! I hope it would still be under warranty since we've only had it a little over a year?
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Old 08-22-2015, 12:46 PM   #16
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Second related issue

I have the same problem, but different issue on my 2015 sunseeker 3050s. Our issue is that one of the black clips that hold the flapper to the sides of the tube to the black tank fell into the tank. Not the flapper arm pops out of the holder, which breaks the seal to the bowl. I would check this as well if you also have a new rig.

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