RV Toilet Seal, 2-Pack with Gloves – Replacement 385311658 for Dometic 300/310/320, High-Grade Rubber Flush Ball Gasket, OD 4″ ID 2.6″, Leak-Proof Fix

★★★★★ 4.8 141 reviews

US$2.08
Price when purchased online
Free shipping Free 30-day returns

Sold and shipped by blog.charterlinkz.com
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$2.08
Price when purchased online
Free shipping Free 30-day returns

How do you want your item?
You get 30 days free! Choose a plan at checkout.
Shipping
Arrives Aug 24
Free
Pickup
Check nearby
Delivery
Not available

Sold and shipped by blog.charterlinkz.com
Free 30-day returns Details

Product details

Management number 237482755 Release Date 2026/07/10 List Price US$2.08 Model Number 237482755
Category

Product IntroductionThis package includes 2 high-quality RV toilet seals and 1 pair of nitrile gloves. Designed specifically for Dometic 300/310/320 RV toilets, this set is a direct replacement for OEM part number 385311658. Made from premium rubber blend with precision molds for a precise fit, effectively solving toilet leaks and odor problems.Installation InstructionsPlease follow the steps below for installation:Turn off the water supply. Press down the pedal to hold the flush ball open.Grab the underside of the old seal and pull to remove.Clean the rim and bowl area where the old seal was seated.Release the flush pedal and let the flush ball close.Clean and close the flush ball. Place the new seal and press it down around the entire edge until it is fully seated.Reopen the flush ball. Turn on the water supply. Add water to the bowl and check for any leaks.Note: Your purchase includes a pair of nitrile gloves. Wear them during installation to keep your hands clean.Important Compliance NoticeThis product is designed for RV toilet waste water systems only.Product SpecificationsItem SpecificationOuter Diameter: 4 inchesInner Diameter: 2.7 inchesThickness: 0.28 inchesMaterial:Premium rubber blendPackage Includes: 2 seals + 1 pair of nitrile gloves

  • 【Stop Leaks & Odors】-Replace your worn or cracked flush ball gasket to stop water leaks and sewer smells from your RV toilet. Restores a tight seal for proper water level and better flushing. For use in RV waste water systems only – not for drinking water applications.
  • 【Perfect Fit for Dometic 300/310/320】-Direct replacement for part 385311658. Fits Dometic 300, 310, and 320 RV toilets. Does NOT fit 210, 510, or other unlisted models. OD: 4″ | ID: 2.7″ | Thickness: 0.28″
  • 【Durable High-Grade Rubber】-Made from premium rubber blend with precision molds for a perfect fit. Resists cracking, flattening, and wear – built to last.
  • 【Easy DIY Installation – Gloves Included】-① Turn off water supply,② Remove old seal (no toilet disassembly needed),③ Install new seal with "THIS SIDE UP" facing up,④ Check for leaks. Gloves included – keep your hands clean.
  • 【2-Pack Value】-Includes two RV toilet seals + one pair of gloves – one seal to use now, one as a spare.
ASIN B0GRTCBFRC
Brand Tonsamvo
Model MTMFQ-300
Item Weight 1.58 ounces
Manufacturer Tonsamvo
Item model number MTMFQ-300
Package Dimensions 5 x 5 x 0.75 inches
Manufacturer Part Number MTMFQ-300

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Customer ratings & reviews

4.8 out of 5
★★★★★
141 ratings | 58 reviews
How item rating is calculated
View all reviews
5 stars
87% (123)
4 stars
2% (3)
3 stars
1% (1)
2 stars
0% (0)
1 star
10% (14)
Sort by

There are currently no written reviews for this product.