A genuine Thetford OEM replacement door seal designed specifically for Service Door #3. This high-quality rubber seal ensures a watertight and dustproof connection between the service door and the caravan or motorhome wall, protecting your cassette compartment from rain, odours, and dirt ingress. If your existing seal is flattened, cracked, or letting in water, this replacement restores a tight, factory-quality seal.

Part Number: 26601

Colour: Black

Material: Flexible EPDM rubber

Function: Door perimeter seal / gasket

Dimensions: Pre-formed to fit Service Door #3 perimeter

Compatability: 

• Designed for Thetford Service Door #3

• Fits both white and blackdoor models

Frequently Asked Questions 

Q: What does this seal do?
It seals the perimeter of the Service Door #3 on your caravan or motorhome, keeping the cassette area watertight and preventing dust and odours from escaping.

Q: How do I know if my seal needs replacing?
Replace it if you notice:

• Water ingress around the service door

• Visible cracks, flattening, or gaps in the seal

• A loose or brittle rubber profile

Q: How do I install the new seal?
Installation is simple and tool-free:

1. Remove the old seal from the groove.

2. Clean the channel with mild detergent and allow it to dry.

3. Press the new seal evenly into the groove, starting from a corner.

4. Ensure the ends meet cleanly without overlap.

Q: Can I cut the seal to fit?
No , it comes pre-sized for Thetford Service Door #3.