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02-22-2018, 06:38 AM
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#1
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Senior Member
Join Date: Jan 2014
Location: Tidewater Area Virginia
Posts: 1,271
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Dometic 310 Toilet Floor Seal $26 OR???
So my toilet is leaking around the base and it points to the floor flange seal (not the ball valve seal). After looking quite a bit all I can find is one part going for around $26. Is there a "generic" seal I can grab somewhere that will work, or do I need to sell some body parts for this seal that should cost about $4-6?
https://smile.amazon.com/gp/product/...ilpage_o00_s00
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2014 Raptor RP300MP w/ Rear Patio Party Deck, Folding Side Ladder, 6 Point Level Up, Carlisle Radial Trail HDs
2004 2500HD D/A CC SB - TTT Mirrors, Prodigy BC, 18K Pullrite Superglide, NEW Fuel Injectors 11/2015 (ouch)
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02-22-2018, 07:06 AM
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#2
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,841
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I've found they normally sell for about $20-25 at most RV parts stores, so paying $26 online with shipping is about the right price. You can't use a wax seal, unlike a S&B toilet, the one in your RV moves down the road, vibrates and wiggles, so it would start leaking with a wax seal after the first day or two. That doesn't address the temperature extremes an RV is subjected to. One hot day in Arizona would melt a wax seal into the holding tank and/or out onto the DW's "newly cleaned floor".... That isn't good for "happy camping".....
I haven't found anything at a Lowe's or HD that I'd trust in an RV. Not saying it doesn't exist or what's there can't be modified to work, but as often as it gets replaced, I wouldn't suggest trying to spend the time and frustration to modify something when the designated part is a quick "buy it, install it and forget it" kind of thing..... YMMV
ADDED: Don't overlook the gasket that's between the porcelain bowl and the plastic base. A number of people have found leaks at that location. It sometimes leaks from the outside and is readily apparent, other times it leaks internally, runs down the inside of the base and looks like a toilet flange leak, so be sure what you've got going on. Dometic recommends toilet replacement and says the bowl/base gasket is not replaceable, but a number of people take it apart, use silicone and get several years out of the repair.
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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02-22-2018, 07:35 AM
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#3
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Senior Member
Join Date: Jan 2014
Location: Tidewater Area Virginia
Posts: 1,271
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Thanks. Just wanted to make sure I wasn't overlooking something knowing how overpriced all this RV specific stuff is. As for the bowl - base leak, it could be that, I'm not sure til I get it apart though and wanted to have the seal on hand just in case I get lucky and that's all it is, otherwise it's a new toilet. I have seen, only once of twice, a small line of dried "blue" liquid from that seam, so that's probably not a good sign.
__________________
2014 Raptor RP300MP w/ Rear Patio Party Deck, Folding Side Ladder, 6 Point Level Up, Carlisle Radial Trail HDs
2004 2500HD D/A CC SB - TTT Mirrors, Prodigy BC, 18K Pullrite Superglide, NEW Fuel Injectors 11/2015 (ouch)
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02-22-2018, 07:43 AM
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#4
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,600
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Quote:
Originally Posted by canesfan
Thanks. Just wanted to make sure I wasn't overlooking something knowing how overpriced all this RV specific stuff is. As for the bowl - base leak, it could be that, I'm not sure til I get it apart though and wanted to have the seal on hand just in case I get lucky and that's all it is, otherwise it's a new toilet. I have seen, only once of twice, a small line of dried "blue" liquid from that seam, so that's probably not a good sign.
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The pricing you're looking at looks fair if that's to the door. I didn't see anything "generic" for the toilet. When I recently replaced my Thetford with the Dometic 310 the gaskets looked pretty different. I'd buy the gasket then pull the toilet and hope that's where the leak is. The blue line at the pedestal/bowl seal doesn't sound encouraging. If you have to replace the toilet, it comes with a new seal so you may have a spare or keep it in good shape and return it.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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02-22-2018, 09:25 AM
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#5
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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The Dometic toilet is completely rebuildable, unless cracked, & the last time the entire kit wasn't much more than $25-30 & came with the floor gasket. The floor gasket is a thick foam donut, I can't imagine it cost $25, in fact I've got 2 in my parts stash.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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02-22-2018, 11:09 AM
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#6
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,841
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Quote:
Originally Posted by travelin texans
The Dometic toilet is completely rebuildable, unless cracked, & the last time the entire kit wasn't much more than $25-30 & came with the floor gasket. The floor gasket is a thick foam donut, I can't imagine it cost $25, in fact I've got 2 in my parts stash.
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Do you have a link for that rebuild kit? I'd definitely be interested in finding the part number for either the gasket or a rebuild kit for the 310 toilet.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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02-23-2018, 03:02 AM
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#7
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,308
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__________________
Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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02-23-2018, 07:44 AM
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#8
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Sorry I ordered mine off the internet a couple years ago & seems it was from Dometic?
The above link shows a wax ring, & none of my rvs, whether Thetford or Dometic toilets, have had wax rings, all have been about a 1/2" thick very dense foam donut.
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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02-23-2018, 11:23 AM
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#9
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Senior Member
Join Date: Jan 2014
Location: Tidewater Area Virginia
Posts: 1,271
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Thanks all. I'd be interested in the rebuild kit, everything I've read says Dometic says it's not fixable, but of course they want you to buy a new toilet.
__________________
2014 Raptor RP300MP w/ Rear Patio Party Deck, Folding Side Ladder, 6 Point Level Up, Carlisle Radial Trail HDs
2004 2500HD D/A CC SB - TTT Mirrors, Prodigy BC, 18K Pullrite Superglide, NEW Fuel Injectors 11/2015 (ouch)
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02-23-2018, 12:07 PM
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#10
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Senior Member
Join Date: Feb 2015
Location: Texas
Posts: 1,085
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Wonder if this would work?
-Brian
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2014 Bullet Premier 22RBPR - let the camping commence!
2013 F150 Platinum - 5.0 - 3.55 ELD + towing package
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02-23-2018, 01:22 PM
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#11
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Senior Member
Join Date: Jan 2014
Location: Tidewater Area Virginia
Posts: 1,271
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Quote:
Originally Posted by B-O-B'03
Wonder if this would work?
-Brian
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I looked at that and read questions/reviews. It looks totally different from the Dometic one and comments seem to say it isn't the same. BUT, that's MUCH more in line with what the price for a donut of foam should be.
__________________
2014 Raptor RP300MP w/ Rear Patio Party Deck, Folding Side Ladder, 6 Point Level Up, Carlisle Radial Trail HDs
2004 2500HD D/A CC SB - TTT Mirrors, Prodigy BC, 18K Pullrite Superglide, NEW Fuel Injectors 11/2015 (ouch)
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02-23-2018, 01:58 PM
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#12
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,600
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Quote:
Originally Posted by B-O-B'03
Wonder if this would work?
-Brian
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This is a Thetford seal. When I was messing with mine before I replaced it the lady at CW parts brought me both seals; Thetford and Dometic, they didn't look anything alike other than being round. The Thetford has a rounded over lip while the Dometic is just a round, squared off gasket. It might work but I'd be afraid it would leak or not fit.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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02-23-2018, 02:37 PM
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#13
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,308
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Both links I clicked were black foam.
__________________
Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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02-23-2018, 03:41 PM
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#14
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,600
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If you look at the Thetford you can see on the inner circle the rounded over edge that turns into a lip. The Dometic doesn't do that.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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02-23-2018, 05:39 PM
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#15
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Quote:
Originally Posted by B-O-B'03
Wonder if this would work?
-Brian
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That looks like what came with my kit & the new toilet also.
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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02-23-2018, 05:44 PM
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#16
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,600
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I think I'm missing something. The new Dometic toilet came with a "Thetford" seal?? I pulled a Thetford and it looked just like the one in the link. I installed a Dometic and the seal looked just like the one in that link......the two are very different as were the ones the parts person brought me; one Thetford, one Dometic??? The pictures aren't the best but they are not the same seals, and, one specifies Dometic and the other Thetford. I doubt they are using the same seal from the same place
Edit: I'm not saying that one might not replace the other, they may. I did not want to try using one made for one toilet on another since they were definitely different in the way they were shaped.
__________________
Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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03-05-2018, 08:42 AM
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#17
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Junior Member
Join Date: Apr 2016
Location: Bethalto, IL
Posts: 18
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We had our Dometic 310 leak, while on a trip to Branson. Noticed it leaking at the bottom of the bowel and would drip down on the front to the floor. I went to a Camping World somewhat near there and explained the situation. The service person said there was no point in trying to replace the seals and that we would need a new toilet. The replacement seals would not work or last, they said. Decided to replace and upgrade. It was easy to replace.
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11-17-2018, 06:45 AM
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#18
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Senior Member
Join Date: Sep 2015
Location: Austin, TX
Posts: 834
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Did the seal fix the leak?
Mine seams to start leaking every 1.5 years. Domestic sent me a new one when it leaked in early 2017. The new one is now leaking.
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(SOLD) 2015 Keystone Passport 2810BH
2013 Ram 1500 Hemi 8-speed 3.92 Air Suspension
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11-17-2018, 07:25 AM
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#19
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Senior Member
Join Date: Nov 2017
Location: Mico, TX
Posts: 7,395
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Here is an interesting thread from another forum regarding the leaking 310 at the base:
https://heartlandowners.org/showthre...-bowl-and-base
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wiredgeorge Mico TX
2006 F350 CC 4WD 6.0L
2002 Keystone Cougar 278
2006 GL1800 Roadsmith Trike
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11-17-2018, 08:37 AM
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#20
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Senior Member
Join Date: Sep 2015
Location: Austin, TX
Posts: 834
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I've seen that before. Dometic claims it has been fixed. They said it was a certain number of toilets. It could be an issue with all of the 310s.
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(SOLD) 2015 Keystone Passport 2810BH
2013 Ram 1500 Hemi 8-speed 3.92 Air Suspension
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