Dometic 385311653 Floor Flange Seal Kit - Mounting Hardware and Seal - Bone - Compatible with 300/301/310/311/320/321 Models

Maintain a secure and leak-free RV bathroom with the Dometic 385311652=3 Floor Flange Seal Kit, designed for 300, 301, 310, 311, 320, and 321 models. This essential kit includes both the mounting hardware and the floor flange seal, providing everything needed to properly secure your RV toilet while preventing leaks and ensuring a hygienic bathroom environment.

The primary purpose of the floor flange seal is to create a watertight connection between the toilet base and the RV’s plumbing, protecting your flooring from water damage and preventing unpleasant odors from escaping. The included mounting hardware ensures a stable, secure installation, keeping your toilet firmly in place even during travel.

Manufactured from durable, high-quality materials, the kit is built to withstand the rigors of daily RV use while maintaining long-lasting performance. Installation is straightforward, making it easy for RV owners and maintenance professionals to replace worn or damaged seals quickly.

By replacing the floor flange seal, you ensure proper alignment and a tight, leak-free fit for your Dometic toilet, extending the life of your bathroom components and providing peace of mind on every trip. The bone Dometic 385311653 Floor Flange Seal Kit is an OEM-quality replacement designed to restore functionality, hygiene, and reliability to your RV toilet system.

Key Features

• OEM replacement floor flange seal kit for Dometic 300/301/310/311/320/321 Series toilets
• Includes mounting bolts, nuts, washers, and a high-quality seal
• Bone color to match standard Dometic toilet bases
• Ensures a secure, leak-free connection between toilet and floor flange
• Durable, corrosion-resistant components for long-lasting use
• Easy installation using standard tools

Compatible Series & Models

• Traveler / Standard Series: 300, 301, 310, 311, 320, 321

Replaces / Also Known As

• Dometic 385311653 Floor Flange Seal Kit
• Toilet Base Mounting Kit – Bone
• OEM Dometic Toilet Flange Hardware & Seal
• Traveler / 300/310/320 Series Mounting and Seal Assembly

What’s Included

• 1 Floor flange seal (Bone)
• Mounting bolts, nuts, and washers

Installation

1. Turn off water supply and remove the toilet from the floor flange.
2. Remove old seal and hardware.
3. Place the new seal onto the flange and align the mounting holes.
4. Reposition the toilet and secure using the included bolts, nuts, and washers.
5. Check for proper sealing and stability.

No specialized tools required; installation typically takes 10–20 minutes.

Frequently Asked Questions

Q: Will this kit fit other Dometic toilet models like the 110 or 210?
No. This kit is designed specifically for Dometic 300, 301, 310, 311, 320, 321 series toilets.

Q: Is this the OEM Dometic part?
Yes, this is a genuine Dometic replacement kit.

Q: Does it include the mounting hardware?
Yes, bolts, nuts, washers, and the seal are all included.

Q: Can this be used in marine toilets?
Yes, it is compatible with RV and marine installations using the listed Dometic series toilets.