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RV Toilet Flush Ball Seal for Dometic 300 310 320 Toilet Seal Gasket Kit Replacing 385311658, 2-Pack

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$9.99

$ 4 .99 $4.99

In Stock

About this item

  • SIZE: outside diameter: 4 inches; inside diameter: 2.75 inches. Package includes: 2 pcs RV toilet seals.
  • APPLICABLE MODEL: Our 385311658 RV Toilet Seal Gasket is fully compatible with 300/310/320 RV Toilets, Motorhome and Trailer Toilets, Replacement part number 385311658.(NOTE: Does not apply to any other models not mentioned, please check your model number carefully).
  • PREMIUM QUALITY: Our products go through a heavy process of making precise moulds before being processed in the factory and then strictly reproduced using the moulds. The products use special materials with good sealing to help you solve odour and leakage problems.
  • EASY INSTALLATION: Installation is very easy, just take out the old seal, install the new one correctly, and it's ready to use. (Note: Make sure to install it correctly, in place, with the side with "THIS SIDE UP" font on the edge of the product facing upwards).
  • QUALITY SERVICE: We have written detailed installation steps in our details, if you do not know how to install, please scroll down to see the steps. You can also contact us if you have any problems in the installation process, we will be responsible for you to solve, wish you happy shopping.



Product Description

Dometic 300
Dometic 300

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Product Details:

Product Name:RV Toilet Flush Ball Seal

Size: outside diameter: 4 inches; inside diameter: 2.75 inches

Package includes: 2 pcs RV toilet seals

RV Toilet Flush Ball Seal Replacement for Dometic 300 310 320

RV Toilet Parts

-RV Toilet Seal Kit Perfect Replacing 385311658

  • The product is mainly to help you solve the problem of odour and water leakage, but also your fresh air, a good environment
Dometic 300
Dometic 300

Installation steps

  1. Turn off water supply
  2. Hold the flush ball open by depressing the flush pedal
  3. Grasp the underside of the old seal and pull towards you to remove
  4. Clean the rim and bowl area where the old gasket previously sat
  5. Release flush pedal and allow the flush ball to close
  6. Clean the flush ball
  7. With the flush ball closed, put the new seal in and press outwards to ensure that it is firmly in place
  8. Reopen the flush ball and spread a lubricant in the areas where the gasket will contact the flush ball
  9. Open and close the flush ball several times, then press down on the gasket to ensure it is properly positioned
  10. Turn on the water supply, add water to the bowl and ensure that there are no leaks
Dometic 300

reuniti
Reviewed in the United States on March 30, 2025
It was a little difficult installing
Curt
Reviewed in the United States on April 12, 2025
Not sure if it’s the seal or the lube
David Harold Ketcham jr
Reviewed in the United States on September 14, 2024
Easy to install and fixed the issue with the bowl not holding water in it
Rob Bennett
Reviewed in the United States on June 10, 2024
Comes in a 2 pack. Neither one sealed. Says it works for Dometic RV toilets, did not!
LJD
Reviewed in the United States on February 5, 2024
These were specific for the three Dometic RV toilets listed. They are good quality and a perfect replacement for the original seal. Directions are clear and replacement is easy following those directions. My RV toilet would not hold water which is a barrier for holding tank odors coming into the coach. 5 minute job and the problem is solved. Good product. Good results.
Customer
Reviewed in the United States on November 17, 2024
Bought for the 310. Leaks by this gasket. I will have to try the ridiculously priced OEM gasket.
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