Replacement Parts for a Sealand Toilet
Question:
Is the sealand 340685 toilet the same as the dometic 510? I need to replace some parts and wanted to find the correct items.
asked by: Lori
Expert Reply:
I didn't have much luck looking up the sealand 340685 toilet specifically. However, the Dometic 510 Full-Timer RV Toilet # DOM29FR is also called the Dometic Sealand Traveler 510 Series RV or Marine Toilet. There are a number of replacement parts that fit the Dometic Sealand toilets like the Replacement Toilet Bowl Seal Kit for Dometic Sealand # DOM35FR and the Replacement Water Valve for Dometic Sealand # DOM55FR.
I am not sure what replacement parts you are specifically looking for, but if you wanted to let me know what parts you are needing I would be happy to help locate those for you.

Products Referenced in This Question
Replacement Toilet Bowl Seal Kit for Dometic Sealand and VacuFlush RV Toilets
- Accessories and Parts
- RV Toilets
- Seals and Gaskets
- Seal Kit
- Dometic
more information >
Replacement Water Valve for Dometic Sealand, Traveler, and VacuFlush RV Toilets
- Accessories and Parts
- RV Toilets
- Valves
- Water Valve
- Dometic
more information >
Product Page this Question was Asked From
Dometic 510 Full-Timer RV Toilet - Standard Height - Elongated Seat - White Ceramic
- RV Toilets
- Standard Height
- Elongated
- 11 Inches
- Gravity Flush Toilet
- Full-Rim - Best
- Ceramic
- White
- Dometic
more information >
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David G.
3/3/2025
My seal and rv toilet 340685 on a 97 Monaco rv does not hold water after flushing. Trying to find parts for it. Thank you.