Dometic RV Toilet Ball Seal Kit - Fits 300/310/320 Series - Part# 385310819

DometicSKU: 385310819
Added to catalog: March 10, 2026
Last product update: June 5, 2026 at 11:10 PM

Sale price$95.99 Regular price$152.62
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In stock (13 units), ready to be shipped
FREE Delivery Estimate June 9 – June 12
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1-Hour Cancellation Window

You'll have 1 hour after placing your order to update your shipping address or cancel completely.

After that, we begin coordinating with our vendors to fulfill your order — at that point, cancellations and address changes usually aren't possible.

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The Dometic toilet ball seal kit is the essential replacement component for your RV's gravity flush toilet system. This seal kit restores the watertight seal between the bowl and the ball mechanism, preventing leaks and ensuring reliable operation of your Dometic 300, 310, or 320 series toilet. If your toilet is running continuously, leaking at the base, or not holding water, this kit is likely the solution you need.

Key Features

  • Complete ball seal replacement kit for Dometic gravity flush toilets
  • Fits Dometic 300, 310, and 320 series models
  • Restores watertight seal to eliminate leaks and continuous running
  • Easy DIY installation—no special tools required
  • Genuine OEM Dometic part ensures perfect fit and performance
  • Affordable solution to extend toilet lifespan and prevent water damage

Technical Specifications

Specification Details
Part Number 385310819
Compatible Models Dometic 300, 310, 320 Series
Component Type Ball Seal Kit
Material Rubber and plastic components

Frequently Asked Questions

How do I know if my toilet ball seal needs replacement?
Common signs include water continuously running into the bowl, leaking around the base of the toilet, or the flush mechanism not holding water between uses. If you notice any of these issues, the ball seal kit is the first component to replace.

Is this kit difficult to install?
No. Most RV owners can replace the ball seal kit in 15-30 minutes using basic tools. The kit includes all necessary components, and installation involves removing the toilet bowl, replacing the seal, and reinstalling. Your Dometic toilet manual will provide step-by-step guidance.

Will this kit work on my specific Dometic toilet model?
This kit is designed for Dometic 300, 310, and 320 series toilets. If you're unsure of your model, check the toilet bowl or your RV documentation. Our expert support team can also help you verify compatibility before purchase.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic RV replacement parts and ship directly from Elkhart, Indiana—the RV capital of the world. Every part we sell is genuine OEM Dometic equipment backed by expert customer support. When you need the exact part to keep your RV systems running smoothly, Elkhart RV Parts is your trusted source.

100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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