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Replacement Flush Ball Seal for Dometic RV Toilet
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Dometic

Replacement Flush Ball Seal for Dometic RV Toilet

Part Number: DOM63FR
113 Reviews | 27 Questions
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$37.71
Retail:$48.99
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dometic accessories and parts rv toilet replacement flush ball seal for
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dometic accessories and parts seals gaskets flush ball seal
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Replaces the flush ball seal for your Dometic weekender, part-timer, or full-timer RV toilet. Seal keeps water in the bowl when in use, while blocking sewer odors from rising up into your RV cabin. Simple press-in installation requires no tools. 1-800-940-8924 to order Dometic accessories and parts part number DOM63FR or order online at etrailer.com. Free expert support on all Dometic products. Great prices and Fastest Shipping for Replacement Flush Ball Seal for Dometic RV Toilet. Accessories and Parts reviews from real customers.
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Dometic Accessories and Parts - DOM63FR

  • RV Toilet
  • Seals and Gaskets
  • Flush Ball Seal
  • Dometic

Replaces the flush ball seal for your Dometic weekender, part-timer, or full-timer RV toilet. Seal keeps water in the bowl when in use, while blocking sewer odors from rising up into your RV cabin. Simple press-in installation requires no tools.


Features:

  • Replaces the flush ball seal for select Dometic RV toilets
    • 301 Series Weekender 9108782123 (DOM24FR)
    • 300 Series Weekender 9108765625 (DOM74FR), 9108765624 (DOM64FR), 9108765630 (DOM84FR)
    • 321 Series Full-Timer 9108782774 (DOM99FR), 9108782781 (DOM49FR)
    • 320 Series Full-Timer 9108781897 (DOM27FR), 9108781896 (DOM87FR), 9108781899 (DOM39FR), 9108781898 (DOM59FR)
    • 311 Series Part-Timer 9108923946 (DOM77FR), 9108923945 (DOM67FR)
    • 310 Series Part-Timer 9108923942 (DOM37FR), 9108923941 (DOM57FR), 9108923943 (DOM97FR), 9108923944 (DOM47FR)
  • Creates a seal around the flush ball to prevent water from leaking and smells from escaping
  • Made in the USA


Specs:

  • Outer diameter: 4"
  • Inner diameter: 2-3/4"
  • Quantity: 1 seal


385311658 Replacement Flush Ball Seal for Dometic Series 300, 310, and 320 RV Toilets







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Customer Satisfaction Score:

Ratings & Reviews

4.7

113 reviews
5 Stars
(95)
4 Stars
(12)
3 Stars
(3)
2 Stars
(1)
1 Star
(2)
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by:
When it comes to trailers, campers, their related parts, and so on, Etrailer doesn't just sell it, they KNOW it!
Very easy company to work with. They always try to go the extra mile with helpful info.
by:
I bought a replacement seal from Amazon and had nothing but trouble installing it and when I finally did get it installed it continued to leak. I bought the more expensive one here and it installed in half the time and held water overnight. So fingers are crossed it continues to hold water.
by:
We have gone too long dealing with the problem of sewer fumes thinking the fix would be hard. We saw web site ordered 2 seals. Easy to install plus use the lubricant by Theford. Our problem is fixed.
by:
Fast shipping. OEM part so not cheap,but well worth it!
by:
This item was ordered as a backup. Like it has been said, nothing lasts forever. This is the second one I have bought.
Brooke M. profile picture
Etrailer Expert

Brooke M.

5/21/2025

Very true! At least you are prepared and won't be caught without a replacement in a time of need :) Don't want to mess around when it comes to toilets

Steven profile picture

Steven

5/21/2026

It has settled into a proper working part. The design is tricky to install. Then adding hot water on it to get it to expand doesn’t always work. What helped me was to add a coating of Vaseline between the gasket and the ball. So far so good.

by:
exactly what I needed
by:
You guys are awesome!
Shipping very quick!!
Will order from etrailer again!
by:
Easy to install
by:
Original Dometic product OEM!
by:
It didn't fit the way I thought it would fit but it did go in but it still does not hold water.
by:
The exact part we needed.
by:
The part is an OEM part and was delivered in 2
Days.
by:
The seal was an original part and not an aftermarket item. It worked perfectly.
by:
Having the seal replaced under warranty at my dealership. Will keep it as a backup. Thank you.
by:
It was an easy install and so far it's working great!
by:
Works. Easy to install. OEM more expensive than others but works without issue.
by:
To expensive
by:
The seal worked great thanks.
by:
A bit pricey for the item, but it'll do the job.
by:
I like ordering from etrailer! I can call and ask them about the products and they always answer my questions so I know I'm getting what I need or want.
This flush ballseal was from Dometic, installed easily. Toilet bowl still holding water a week later. Thankyou etrailer
Dc profile picture

Dc

3/19/2024

It has been a year and the flush ball seal is still holding water. Thank you etrailer

by:
The included instructions made it easy to install. Only took about 5 minutes
by:
Shipping time was acceptable, installation was quick and easy and it held water. Done deal.
by:
The staff is very knowledgeable and professional.
by:
Great fit, worked perfectly for OEM fifth wheel hitch on my Ford.
by:
E-Trailer always has great products backed with fantastic support & customer service. Lighting fast shipping. A true standout in todays otherwise lack luster business world. Completely recommended.
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Alexander C
Written by:
Alexander C

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