Dometic Floor Flange Seal Kit - RV Toilet Installation - Part# 385310063

DometicSKU: 385310063
Added to catalog: March 11, 2026
Last product update: June 5, 2026 at 7:43 PM

Sale price$48.99 Regular price$77.89
| Found it cheaper? Get an answer in seconds.
In stock (374 units), ready to be shipped
FREE Delivery Estimate June 9 – June 12
1-Hour Cancellation Window

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.

If you're unsure about anything, please reach out before ordering or cancel within the window.

The Dometic Floor Flange Seal Kit is an essential component for installing or repairing Dometic RV toilets. This seal kit creates a watertight connection between your toilet and the floor flange, preventing leaks and odors from escaping into your RV's underbelly. If you're replacing an old toilet or noticing water seepage around the base of your existing unit, this genuine OEM seal kit is exactly what you need.

Key Features

  • Genuine OEM Dometic part ensures perfect fit and compatibility
  • Creates a complete watertight seal between toilet and floor flange
  • Prevents water damage and odor leaks in your RV
  • Easy installation for DIY RV owners and technicians
  • Includes all necessary sealing components for a professional installation
  • Durable rubber and plastic construction designed for RV environments

Technical Specifications

Specification Details
Part Number 385310063
Manufacturer Dometic
Application RV Toilet Floor Flange Installation
Type Seal Kit

Frequently Asked Questions

Q: How do I know if my floor flange seal needs replacement?
A: Signs include water pooling around the base of your toilet, musty odors coming from under the RV, or visible cracks in the existing seal. If you're installing a new toilet, always use a fresh seal kit for optimal performance.

Q: Is this kit compatible with all Dometic RV toilets?
A: This kit is designed for standard Dometic floor flange installations. We recommend verifying your specific toilet model with our expert support team to ensure compatibility before ordering.

Q: Can I reuse the old seal, or do I need a new one?
A: For best results, always install a new seal kit. Old seals lose their flexibility and watertight properties over time, which can lead to leaks and water damage in your RV.

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 our expert support team. When you need the right part the first time, trust Elkhart RV Parts.

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.

You may also like

Recently viewed