---
product_id: 45883249
title: "Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round"
brand: "mission automotive"
price: "R$200"
currency: BRL
in_stock: true
reviews_count: 13
category: "Mission Automotive"
url: https://www.desertcart.com.br/products/45883249-mission-automotive-flush-ball-seal-gasket-compatible-with-dometic-300
store_origin: BR
region: Brazil
---

# Quick, tool-free DIY installation Fits Dometic 300/310/320 RV toilets Durable rubber for long-lasting seal Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round

**Brand:** mission automotive
**Price:** R$200
**Availability:** ✅ In Stock

## Summary

> 🚐 Seal the deal with leak-proof confidence!

## Quick Answers

- **What is this?** Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round by mission automotive
- **How much does it cost?** R$200 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/45883249-mission-automotive-flush-ball-seal-gasket-compatible-with-dometic-300)

## Best For

- mission automotive enthusiasts

## Why This Product

- Trusted mission automotive brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium rubber construction resists wear and tear, keeping your RV toilet leak-proof season after season.
- • **Trusted by RV Pros:** Join thousands of savvy RV owners who rely on Mission Automotive for dependable toilet maintenance.
- • **Leak-Proof Confidence:** Precision design guarantees a tight seal, preventing leaks and maintaining optimal toilet performance.
- • **Seamless Compatibility:** Perfectly engineered for Dometic 300/310/320 models, ensuring a flawless fit every time.
- • **DIY-Friendly Installation:** No tools, no hassle—replace your flush ball seal in minutes and get back on the road faster.

## Overview

The Mission Automotive Flush Ball Seal Gasket is a durable, rubber replacement part designed specifically for Dometic 300, 310, and 320 RV toilets. It offers a perfect fit, easy tool-free installation, and reliable leak prevention, making it an essential upgrade for maintaining your RV’s toilet system and avoiding inconvenient water loss on the road.

## Description

Buy Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round: Seals - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Essential RV toilet maintenance - You know the story: the rubber seal on your RV toilet leaks, and the water in the bowl disappears in 1 hour or 1 day. I've seen youtube videos that show how to fix such a leak, by replacing the seal. To me that seems ridiculous, because the seal is probably ok, but it's only caked in cr@p and needs to be cleaned off. I took that approach, properly cleaning the seal, and it held for years -- until it didn't. Eventually, it would not hold water, even after proper cleaning. Luckily, replacing the seal is super-easy, and requires no tools, no disassembly. Just turn off the water, open the trap, reach down and pull the seal off (extra careful not to drop it in the tank) and put the new one in. I found that the old rubber seal had limescale on it, and it was slightly deteriorated. Looking at it, I agree that it needed to be replaced, and simply cleaning it would not stop the leak. It was after 3 seasons of camping. This particular seal is an aftermarket seal, but it fit perfectly, and has now held water for more than 2 weeks. I recommend it. I also recommend first removing and cleaning the seal, before deciding it needs to be replaced.
Review: Simple to install - Very easy to install and works very well

## Features

- Versatile Compatibility: Mission Automotive Flush Ball Seal is compatible with Dometic 300, 310, and 320 RV toilets. This RV toilet flush seal ensures a perfect fit for seamless toilet maintenance and enhanced functionality
- Long-Lasting Durability: Constructed from rubber, this flush ball gasket vacuflush promises longevity and reliability. The robust design of this RV seal withstands the rigors of frequent travel, ensuring continuous operation
- Effortless Installation: Easily install this RV toilet ball gasket without professional help, saving both time and money. The user-friendly process allows DIY enthusiasts to replace seals efficiently, promoting hassle-free maintenance
- Optimal Leak Prevention: This flush ball seal gasket effectively prevents leaks, maintaining the integrity of your RV toilet system. Its precision engineering provides a tight, secure fit, enhancing the overall performance of your automotive replacement parts
- Reliable Performance: By integrating this RV toilet flush seal, users experience optimal toilet functionality. The superior construction ensures compatibility with various models, making it a valuable addition to your RV parts accessories collection

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0741WJSRM |
| Best Sellers Rank | #115,054 in Automotive ( See Top 100 in Automotive ) #81 in RV Toilet Spare Parts |
| Brand | Mission Automotive |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,770) |
| Date First Available | July 18, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.704 ounces |
| Item model number | IP300310320 |
| Manufacturer | Mission Automotive |
| Manufacturer Part Number | IP300310320 |
| Model | 1 |
| Product Dimensions | 4 x 4 x 0.5 inches |

## Images

![Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round - Image 1](https://m.media-amazon.com/images/I/61bpvLjcwKL.jpg)
![Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round - Image 2](https://m.media-amazon.com/images/I/61mvIdgZ4oL.jpg)
![Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round - Image 3](https://m.media-amazon.com/images/I/71heKpu7PQL.jpg)
![Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round - Image 4](https://m.media-amazon.com/images/I/71llswX5v5L.jpg)
![Mission Automotive Flush Ball Seal Gasket - Compatible with Dometic 300/310/320 RV Toilets - RV Flush Ball Seal Replacement - Leak-Proof Toilet Gasket Replacement - Pack of 1, Rubber, Round - Image 5](https://m.media-amazon.com/images/I/71mIrFSYo0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Essential RV toilet maintenance
*by T***T on October 15, 2021*

You know the story: the rubber seal on your RV toilet leaks, and the water in the bowl disappears in 1 hour or 1 day. I've seen youtube videos that show how to fix such a leak, by replacing the seal. To me that seems ridiculous, because the seal is probably ok, but it's only caked in cr@p and needs to be cleaned off. I took that approach, properly cleaning the seal, and it held for years -- until it didn't. Eventually, it would not hold water, even after proper cleaning. Luckily, replacing the seal is super-easy, and requires no tools, no disassembly. Just turn off the water, open the trap, reach down and pull the seal off (extra careful not to drop it in the tank) and put the new one in. I found that the old rubber seal had limescale on it, and it was slightly deteriorated. Looking at it, I agree that it needed to be replaced, and simply cleaning it would not stop the leak. It was after 3 seasons of camping. This particular seal is an aftermarket seal, but it fit perfectly, and has now held water for more than 2 weeks. I recommend it. I also recommend first removing and cleaning the seal, before deciding it needs to be replaced.

### ⭐⭐⭐⭐⭐ Simple to install
*by M***K on September 8, 2025*

Very easy to install and works very well

### ⭐⭐⭐⭐⭐ Fits perfectly!! IF it does not you need to ...
*by J***D on August 9, 2018*

This worked for my Dometic. It fit perfectly and did the Job. FOR ALL THOSE PEOPLE SAYING IT DIDN'T!! Either they don't know the Model of their toilet ( Look at your toilet and do a google image search "Dometic toilet 310" or 320") AND / OR Your ball valve is knocked out of place and you need to pull it back into place. Turn off your water --> Open the ball valve --> Use a long tool with a hook on the end I.E. Crowbar etc.. (or your hand if your arm is small enough, mine is not) ---> Hook the hinge arm --> pull up Carefully BUT with some force. You MAY hear or feel a click when the Ball valve gets back into place. If this did not work you will have to take the toilet off and out side turn it over and you will see the connection point clearly. It is very light compared to a normal toilet. GOOD luck!!

## Frequently Bought Together

- Mission Automotive Flush Ball Seal fits Dometic 300/310/320 RV Toilets - Comparable to Part 385311658 Kit - Ideal Replacement Gasket
- XQIQX RV Toilet Seal, 385311652 RV Toilet Replacement Seal and 385311658 RV Toilet Flush Seal Compatible with Dometic 300/310/320 Toilet, RV Toilet Gasket for 300/310/320 Series RV Toilet Flange Seal
- Halotronics Upgraded RV Water Valve Replacement Kit for Pedal-Flush Toilets - Compatible with Sealand Dometic 300, 301, 310, 311, 320, 321 (385311641) - Hardware Included - 2024 Model

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-01-26*