Thetford Toilet Lip Seal Replacement for Porta Potti® - 07101

Thetford Toilet Lip Seal – Replacement for Porta Potti® & Campa Potti® Portable Toilets

The Thetford Toilet Lip Seal is an OEM-correct replacement part designed to restore a tight, odor-containing seal in Thetford Porta Potti® and Campa Potti® portable toilets. This single-piece lip seal installs at the waste valve opening to prevent leaks, reduce odors, and ensure smooth operation of the slide or blade mechanism.

Replacing a worn or damaged lip seal is one of the most effective ways to extend the life of your portable toilet and restore proper sanitation performance.

Key Features & Benefits

• OEM-Correct Replacement – Manufactured to Thetford specifications
• Improves Odor Control – Creates a tight seal between bowl and waste tank
• Prevents Leaks – Stops seepage caused by worn or hardened seals
• Smooth Valve Operation – Helps slide/blade open and close properly
• Durable Rubber Construction – Designed for repeated use and chemical exposure
• Cost-Effective Maintenance – Extends the life of portable toilets

Fits / Compatible With

Thetford Porta Potti® Models

• 135
• 155
• 235
• 245
• 255
• 260
• 265
• 320
• 345
• 365 MSD
• 465 MSD
• 550
• 555
• 565
• 735
• 735 MSD

Thetford Campa Potti® Models

• Campa Potti® XG
• Porta Potti® Curve

Always confirm your model number before ordering.

What’s Included

• (1) Thetford Toilet Lip Seal

Specifications

• Seal Type: Lip seal
• Application: Portable toilet waste valve
• Quantity: Single
• Brand: Thetford

Common Issues This Part Solves

• Odors escaping from the toilet
• Waste leaking into the bowl
• Stiff or difficult slide/blade operation
• Seal cracking, flattening, or deterioration
• Poor sealing between bowl and waste tank

Installation Overview

1. Separate the top and bottom sections of the portable toilet
2. Remove the old lip seal from the waste opening
3. Clean the sealing surface
4. Install the new lip seal evenly
5. Reassemble toilet and test operation

Using an RV-safe silicone lubricant is recommended during installation.

Frequently Asked Questions (FAQ)

What does the lip seal do in a portable toilet?

The lip seal prevents waste and odors from escaping the holding tank while allowing the slide or blade to open and close smoothly.

How do I know if my lip seal needs replacement?

If you notice odors, leaks, or stiff valve movement, the lip seal is often worn and should be replaced.

Is this an OEM Thetford part?

Yes. This seal is manufactured to Thetford OEM specifications for proper fit and performance.

Should I lubricate the seal after installation?

Yes. A light application of RV-safe silicone lubricant helps extend seal life and improves valve operation.

How often should the lip seal be replaced?

Replacement frequency depends on use, but many users replace the lip seal every 1–2 years or when signs of wear appear.