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Old 02-01-2016, 01:13 PM   #15
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Originally Posted by kgburns1 View Post
Mineral oil
On some types of rubber mineral oil will disintegrate it. I'd use a silicone grease if I ever wanted to lube one, and in my over 50 years of RV'ing I never have, nor have I ever replaced a seal. Last rig was 13 years old and the toilet still held water and worked fine.

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Old 02-01-2016, 02:21 PM   #16
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Originally Posted by sbleiweiss View Post
I'm confused by both the question and the answers. Are you asking about the seal on the flap that flushes the toilet or the seal where the toilet meets the floor? We have not "lubed" either one and have not had problems, but we are only 3 year motor homers so far.
I'm speaking of the seal on the flap. I've had my camper for less than a year and it is already not holding water in the bowl. I assumed this was because I didn't keep it wet somehow while in storage. I know it's a warranty replacement, I was just wondering how to keep it from happening again. Thanks for the answers.

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Old 02-01-2016, 02:41 PM   #17
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You could have something jammed in the track (ie..toilet paper).
Use a stiff bristle brush to scrub around the area. If this does not work,
you might have to replace the seal.
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Old 02-01-2016, 08:14 PM   #18
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I use a round bottle brush shaped toilet brush about once every two to three weeks and "spin it " while holding the valve open to clean the seal, that makes the toilet hold water again. as far as storage and evaporation, you can use silicone oil or spray to keep the seal lubed and sealing. Then fill with antifreeze.
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Old 02-01-2016, 08:33 PM   #19
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Originally Posted by Roosters 67 View Post
I use a round bottle brush shaped toilet brush about once every two to three weeks and "spin it " while holding the valve open to clean the seal, that makes the toilet hold water again. as far as storage and evaporation, you can use silicone oil or spray to keep the seal lubed and sealing. Then fill with antifreeze.
The brush is what I use to clean our toilet seals after every trip, about 5 trips a year.

I have two toilets and the coach is 11 years old with no repairs on the toilets and they hold water just fine.

Between trips I keep water in the toilet bowls along with a bit of Dawn dish soap. I put a half cup of Dawn with a couple gallons of water in the two black tanks and a smaller amount in the two gray tanks after I flush out the tanks at the end of each trip.

I don't close the lid on the toilets as they will get moldy.

Being in California I don't have to winterize and we use our coach all year so long term storage is not a problem.
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Old 02-10-2016, 11:07 AM   #20
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I use coconut oil because we have a fancy toilet...or...that's what my wife has in the cabinet.
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Old 03-06-2016, 11:50 AM   #21
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Last year our toilet would not hold water. Easy fix involving silicone grease and rubber gloves. Put grease on seal and manipulate the seal upwards because often the seal just bends downward enough to create a small gap. I also leave antifreeze in the bowl with the lid down but there's a bit of mold. After reading post about mold I will now leave the lid open.

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