Thetford Waste Ball Seal For Aqua Magic Plus and Lite Permanent Toilets - 34120

The Thetford 34120 Waste Ball Seal is a genuine replacement part designed for Aqua Magic Style Plus and Style Lite RV toilets. This seal ensures a tight, leak-free connection between the waste ball and the toilet’s discharge opening, preventing leaks, odors, and inefficient flushing.

If your Style Plus or Style Lite toilet is experiencing leaks, poor sealing, or inconsistent flushing, replacing the 34120 seal restores proper operation and water-tight performance. Manufactured to Thetford’s high-quality standards, this seal is durable, easy to install, and precisely engineered for a perfect fit.

Maintain the hygiene, reliability, and efficient performance of your RV toilet with the Thetford 34120 Waste Ball Seal — an essential component for smooth, leak-free operation in Aqua Magic Style Plus and Style Lite toilets.

Features & Benefits

• OEM waste ball seal engineered specifically for Aqua-Magic Style Lite and Style Plus toilets
• Ensures a watertight and odor-tight seal between the bowl and waste valve
• Helps eliminate bowl seepage, odors, and incomplete sealing
• High-quality rubber designed for RV movement, temperature changes, and long-term use
• Easy, affordable fix for common toilet sealing issues
• Extends the life of the waste valve and improves flush performance

Fits These Models

Compatible with:

• Aqua-Magic Style Lite (permanent toilets)
• Aqua-Magic Style Plus (permanent toilets)

Not compatible with Style II, Bravura, Aqua-Magic V, Galaxy, Aria, or other Thetford models.

Common Issues Solved

Replacing the 34120 waste ball seal can resolve:

• Water slowly draining from the bowl
• Persistent sewer odors coming from the toilet
• Waste ball failing to close completely
• Water leaking from the base of the valve
• Sticking or grinding when opening/closing the waste ball
• Toilet requiring excessive pedal pressure to seal

Replaces / Also Known As

• Thetford 34120 Waste Seal
• Aqua-Magic Style Ball Seal
• RV Toilet Waste Valve Seal
• Style Lite / Style Plus Waste Ball Gasket
• OEM Waste Ball Seal Replacement

What’s Included

• 1 Waste ball seal (OEM rubber gasket)
• Installation instructions

Installation Overview

1. Turn off the RV water supply.
2. Remove the toilet shroud or access panel for waste valve access.
3. Open the waste ball and remove the worn seal.
4. Clean the valve housing to remove debris and mineral buildup.
5. Install the new 34120 seal into the groove around the waste ball opening.
6. Test pedal operation and ensure the waste ball closes smoothly with a tight seal.

Typical installation time: 15–20 minutes.

Frequently Asked Questions

Q: My bowl won’t hold water. Will this fix the problem?
Yes. A worn or flattened waste ball seal is the most common cause of water loss in Thetford toilets.

Q: Is this an OEM Thetford part?
Yes. The 34120 seal is the genuine factory replacement.

Q: Will this improve odor control?
Absolutely. A proper seal prevents odors from escaping the waste tank.

Q: Do I need to remove the toilet to install this seal?
Not usually. Most RV owners can access the waste valve with the toilet in place.

Q: Is lubrication required after installation?
Applying a Thetford-approved seal lubricant can improve life and performance but is not mandatory.