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Topic: Dometic Sealand Leak (Read 464 times) previous topic - next topic
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Dometic Sealand Leak
While looking at our throne, we suspect that we need a replacement gasket between the base and the bowl.  Oh joy (leak, leak, leak).  The part number is 385311462 which is the replacement for the OEM 385310677.  I've read and re-read Bill Atkins post in The Lazy Daze Companion (The Lazy Daze Companion: Leaking Toilet Bowls) and watched a Youtube video on the same subject.  Seems fairly straight forward.  And once I can get access to the flush dome, I'll be able to give it a good cleaning.  Btw, I've try several of the temporary fixes and cleaning remedies to little effect.

I just didn't want this project right now.   I suppose I'll buy the gasket tomorrow, wrap it in Christmas paper, and give my DW another present!  Yeah ... good plan.  LOL

Re: Dometic Sealand Leak
Reply #1 –
Quote from: Traxless  - 
While looking at our throne, we suspect that we need a replacement gasket between the base and the bowl.  Oh joy (leak, leak, leak).  The part number is 385311462 which is the replacement for the OEM 385310677.  I've read and re-read Bill Atkins post in The Lazy Daze Companion (The Lazy Daze Companion: Leaking Toilet Bowls) and watched a Youtube video on the same subject.  Seems fairly straight forward.  And once I can get access to the flush dome, I'll be able to give it a good cleaning.  Btw, I've try several of the temporary fixes and cleaning remedies to little effect.

I just didn't want this project right now.  I suppose I'll buy the gasket tomorrow, wrap it in Christmas paper, and give my DW another present!  Yeah ... good plan.  LOL
So, Ed, your leak is defined that the bowl is not holding water and the water is leaking into the black tank? After 14 yrs, mine has that kind of a slow leak.

Chris
Formerly: 2002 30' IB
Re: Dometic Sealand Leak
Reply #2 –
Ed-

When I replaced the seals I also replaced the flush ball (which was scratched), the vacuum breaker and the water valve. As far as I know, none of that work had been done in the 17 years since the coach was built.

It really isn't a bear to do. The only struggle I had was removing and replacing the pedestal cover. A bright headlamp is a great help. I have a small flashlight on a wrist lanyard for inspecting, in addition to the headlamp.

When you're done, don't forget to dry and apply Pledge to the flush ball. That was in the coach's owners manual.

One more thing- When the flush ball is open, or removed, it pays to keep your tools and materials clear of the opening, or else temporarily stuff a rag into the opening.

Mark H
Former owner, 31-foot gas Class A
Former owner, 1997-8 mid-bath
Re: Dometic Sealand Leak
Reply #3 –
Quote from: Chris Horst  - 
So, Ed, your leak is defined that the bowl is not holding water and the water is leaking into the black tank?

Tiz exactly the leaky situation.  There may be some heavy crude built-up on the dome in the area closest to the front of the toilet.  It looks like I'll need to remove the bowl to reach that part of the dome.  So I might as well replace the seal with the "new and improved" version.  At least that's the plan.
Re: Dometic Sealand Leak
Reply #4 –
Ed, Bill's post in the Companion is good if you are thinking of replacing the flush ball but if the only issue is leaking seals, I suggest you also read my post, 
The Lazy Daze Companion: toilet leaks. toilet seals
 which is focused on just replacing the seals.

As Mark said, it isn't a bear to do.  Plan on a few hours, most of which is spent letting vinegar soften and loosen accumulated salts.

Ken F in NM
'08 MB
Re: Dometic Sealand Leak
Reply #5 –
Off topic but visited Ruby today and the pink stuff good to -50 sitting in the toilet was frozen pretty solid while it was 30 outside and never got below -10 a couple nights ago.

Fail. 👎🏼
Ruby, the red 2004 26' RK hauling Dave and Kristine hither and yon
Re: Dometic Sealand Leak
Reply #6 –
Quote from: huskerblue  - 
Off topic but visited Ruby today and the pink stuff good to -50 sitting in the toilet was frozen pretty solid while it was 30 outside and never got below -10 a couple nights ago.

Was the RV anti-freeze mixed with water?  Or was there any water that trickled into the bowl?   That's a serious failure especially since many folks use it in their waterlines!  Do you know the brand of anti-freeze you used?  And thank you for your post.
Re: Dometic Sealand Leak
Reply #7 –
Oh no.  Not mixed with water was it?  It is not like auto antifreeze that needs to be mixed to reach lowest freezing point. 
Currently: 2008 36' Tiffin Open Road
Previously: 2007 Mid Bath
Re: Dometic Sealand Leak
Reply #8 –
For what it's worth, I used the LDO Amazon link to order the toilet seal kit for $29.99, no tax and no shipping.  The price was $20 less than from our local RV store.   Ordered Dometic (385311462) Toilet Seal Kit by Dometic.   If it turns out that we really don't need it, we've got a backup for when we do.

I'm also thinking about a new Dometic toilet seat ... new as in not used.  (DW says I'm nuts. )   Kinda of like a new mattress vs a used mattress in my OCD way of thinking.  A new toilet seat would be a delayed Christmas present to myself since DW gets the toilet seal kit.

And so it goes.
Re: Dometic Sealand Leak
Reply #9 –
"A new toilet seat would be a delayed Christmas present to myself since DW gets the toilet seal kit."

Your choice of red or green?  Nothing says "Christmas" like a new toilet seat!  ;->

   Virtual hugs,

   Judie
Re: Dometic Sealand Leak
Reply #10 –
No water. I got the stuff from Menard's. It's not frozen solid. More like a slushy or Mister Misty if you had a local Dairy Queen when you were a kid.

We'll see what the water lines look like in the spring.
Ruby, the red 2004 26' RK hauling Dave and Kristine hither and yon
Re: Dometic Sealand Leak
Reply #11 –
It is my understanding that RV antifreeze does turn to a slush consistency well before it reaches its rated freeze point but that it does not expand when this happens.  Therefore it does not cause freeze damage to the plumbing.  Yours is the first report I have seen of this actually happening.

Monti
Re: Dometic Sealand Leak
Reply #12 –
Quote from: Monti  - 
It is my understanding that RV antifreeze does turn to a slush consistency well before it reaches its rated freeze point but that it does not expand when this happens.  Therefore it does not cause freeze damage to the plumbing.  Yours is the first report I have seen of this actually happening.

Monti

 My Pink Stuff gets slushy when the temp. starts  getting close to zero. The coldest I've seen the camper is -10 and the Pink Stuff did not freeze; nor should it.
The brand is Arctic Ban -50
Ed
Re: Dometic Sealand Leak
Reply #13 –
Ed-

I replaced the original toilet seat in the LD with a "slow-close" version. That got nominated for "best improvement ever" by both human members of our household and the cat, who jumps at every sharp noise.

Mark H.
Former owner, 31-foot gas Class A
Former owner, 1997-8 mid-bath
Re: Dometic Sealand Leak
Reply #14 –
Quote from: Kenneth Fears  - 
Plan on a few hours, most of which is spent letting vinegar soften and loosen accumulated salts.

Our new Dometic gasket/seal should arrive this week.  Nevertheless, this last Monday I decided to give the seal a "Kenneth Fears" type soak since I didn't have anything else to do.  I lined the bowl with paper towels, soaked them with vinegar and  took a nap. 

Next I used some Q-tips to clean the area between the seal and bowl.  I was able to reach the backside of the half-dome and so I cleaned that hard to reach area with a nylon pad.  Next, I used some 800 grit sandpaper between the dome and the seal and worked it around the perimeter with the grit side on the dome.  The long vinegar soak worked since it release more crud.  Flushed it with fresh water and give it a dose of Pledge.  Finally, put a cup of RV antifreeze in the bowl and went home.

I checked the toilet this morning (2 days later) and the seal was holding.  So right now, I'll have a replacement seal that I'm sure I'm going to need.  As importantly, I learned that the seal and dome needs more than a cursory cleaning.

Btw, my toilet is probably the cleanest crapper in the neighborhood!  And so it goes.

 
Re: Dometic Sealand Leak
Reply #15 –
To properly and effectively clean the interface between bowl and seal, you must pull the bowl.  The paper towel soak on the flush dome is done with the bowl removed.  Using a vinegar soak meanwhile may help, but you won't get the stuff clean until the bowl is pulled.

I do NOT recommend using a sandpaper on the plastic flush dome with the bowl in place.  You will be abrading the surfaces that are basically clean, and not touching the deposits elsewhere, which is what you really need to clean.

Ken F in NM
'08 MB
Re: Dometic Sealand Leak
Reply #16 –
Quote from: Kenneth Fears  - 
I do NOT recommend using a sandpaper on the plastic flush dome with the bowl in place.  You will be abrading the surfaces that are basically clean, and not touching the deposits elsewhere, which is what you really need to clean.

I certainly agree with you.  The documentation that came with our toilet included a "tool" with directions to use the abrasive side of this tool along the edge of the dome and seal.  I've upload a copy of the owner's manual (see page 5).  At any rate, I used a polishing grade sandpaper soaked in vinegar in place of the Dometic supplied tool to clean the hidden areas of the dome.

EDIT:  Inserted information about the owner's manual.
Re: Dometic Sealand Leak
Reply #17 –
Some months ago, I mentioned our toilet was not holding water and we received some very good guidance.  But I needed to build up the courage to do the repair so I watch several Youtube videos 4-5 times, repeatedly read Ken Fears excellent instructions in the LD Companion, and said a few prayers to the patron saint for all things related to toilets.   Then I procrastinated for several weeks waiting for all the stars to align perfectly.

So this morning we printed a copy of the Ken Fears instructions and headed off to our home on wheels.   Our toilet is now as clean as the day it was made with a seal that seems to be holding water.  I'll check it again tomorrow and make sure the band is still tight.  I have to admit that this has not been my favorite LD project.  But it's done.