Dometic Toilet Seal Kit - Fits 300/310/320 Series - Part# 385310638

DometicSKU: 385310638
Added to catalog: March 10, 2026

Sale price$167.48
|
Sold out
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.

Keep your Dometic RV toilet functioning properly with this essential seal kit. The toilet seal assembly prevents leaks, odors, and waste backup—critical components for any RV owner relying on their onboard sanitation system. This genuine OEM kit fits Dometic 300, 310, and 320 series toilets and includes all seals needed for a complete replacement.

  • Complete seal assembly for Dometic 300/310/320 series toilets
  • Prevents leaks and odor escape from holding tank
  • Genuine OEM Dometic part—guaranteed fit and performance
  • Easy installation with standard RV tools
  • Restores proper toilet operation after wear or damage
  • Includes all necessary gaskets and sealing components
Specification Details
Part Number 385310638
Fits Models Dometic 300, 310, 320 Series
Component Type Seal Kit Assembly
OEM/Aftermarket Genuine OEM
Installation DIY-friendly

Frequently Asked Questions

Q: How do I know if my toilet seals need replacement?
A: Signs include water leaking from the base, persistent odors even after cleaning, or the toilet not holding water properly. If you notice any of these issues, it's time to replace the seal kit.

Q: Will this kit work on my older Dometic 300 model?
A: Yes, this OEM seal kit is designed to fit Dometic 300, 310, and 320 series toilets across multiple years. Always verify your model number before ordering.

Q: Do I need professional installation?
A: Most RV owners can install this seal kit themselves with basic tools. The process typically takes 30-45 minutes. Consult your Dometic manual for step-by-step instructions specific to your model.

Why Elkhart RV Parts

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

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