Thetford Closet Bolts & Flange Seal for Aqua Magic IV, V, & VI Permanent RV Toilets

The Thetford 12524 Closet Bolts and Flange Seal kit is a genuine replacement set designed for Aqua Magic IV, V, and VI RV toilets. This kit includes all necessary closet bolts and a flange seal to securely mount your toilet to the RV floor while preventing leaks and ensuring a stable, tight connection.

If your existing bolts are corroded or missing, or the flange seal is worn or leaking, installing the 12524 kit restores a secure, leak-free installation. Manufactured to Thetford’s high-quality standards, the components are durable, corrosion-resistant, and precisely engineered for a perfect fit.

Maintain the stability, safety, and leak-free operation of your RV toilet with the Thetford 12524 Closet Bolts & Flange Seal kit — an essential component for Aqua Magic IV, V, and VI permanent toilets.

Features & Benefits

• OEM Thetford mounting bolt and flange seal kit for multiple Aqua-Magic toilet series
• Restores proper, stable toilet mounting to the RV floor flange
• Ensures a leak-proof seal at the toilet base
• Prevents rocking, shifting, or toilet movement caused by worn or corroded hardware
• Replaces damaged or compressed flange seals that allow odors or moisture to escape
• Recommended whenever removing or reinstalling the toilet

Fits These Models

Compatible with:

• Aqua-Magic IV
• Aqua-Magic V
• Aqua-Magic VI

Supports standard Thetford permanent toilet floor-flange mounting systems.

Common Issues Solved

Replacing the 12524 kit can resolve:

• Toilet rocking or instability
• Leaks around the base of the toilet
• Sewer odors coming from the floor seal area
• Missing, rusted, or stripped mounting bolts
• Flattened or damaged flange gaskets from long-term use

Replaces / Also Known As

• Thetford 12524 Closet Flange Seal & Bolt Kit
• RV Toilet Floor Mounting Hardware
• Aqua-Magic IV/V/VI Bolt & Gasket Set
• Toilet Base Mounting Seal Kit

What’s Included

• Closet mounting bolts
• Nuts and washers
• Flange/base seal (gasket)

Everything needed for a complete base installation (toilet not included).

Installation Overview

1. Turn off RV water supply and remove the toilet if replacing existing hardware.
2. Clean the floor flange area thoroughly.
3. Position the new flange seal over the flange.
4. Insert the new bolts into the flange slots.
5. Lower the toilet onto the seal, aligning the bolt holes.
6. Tighten nuts evenly to avoid cracking the base.
7. Reconnect water and test for stability and leaks.

Typical installation time: 10–20 minutes.

Frequently Asked Questions

Q: Do I need a new flange seal every time I reinstall the toilet?
Yes — seals compress over time and won’t reliably reseal after removal.

Q: Will this kit work with Aqua-Magic Style Lite or Style II?
No. This kit is specifically for Aqua-Magic IV, V, and VI models.

Q: Is this an OEM Thetford part?
Yes — 12524 is the genuine factory bolt and seal set.

Q: What causes toilet rocking?
Usually worn flange seals, damaged bolts, or loose mounting hardware. This kit resolves all three.

Q: Can I install this myself?
Yes. Installation is simple and requires basic tools.