A genuine Thetford OEM lip seal designed for cassette toilets manufactured before June 2000. This seal sits between the toilet bowl and waste-holding tank, creating a watertight and airtight connection. It prevents leaks, odours, and waste seepage, ensuring smooth blade operation and reliable toilet performance.

If your cassette toilet leaks, smells, or the blade feels stiff, this is the correct replacement for early-model units.

Part Number: T16175

Model Suitability: C2, C3, C4 (Pre-06/2000)

Material: Flexible, chemical-resistant rubber

Function: Waste blade sealing ring

Kit Includes: 1 × Lip seal (rubber blade seal)

Compatability: 

• Suitable for Thetford cassette toilets manufactured before June 2000

• Compatible with early C2, C3, and C4 series models

Frequently Asked Questions 

Q: What does this seal do?
It provides the watertight barrier between the toilet bowl and the waste-holding tank, keeping odours and waste contained while allowing the blade to open and close smoothly.

Q: How do I know if I have the old (pre-2000) or new (post-2000) version?
Check your toilet’s manufacture date found on the ID label near the cassette access door or underneath the toilet bowl:

• Before June 2000: Use this old-type seal (T16175)

• After July 2000: Use the new-type seal (T23721)

Q: What happens if I use the wrong seal?
The seal won’t sit correctly in the groove, which can cause leaks, odours, or difficulty operating the waste blade.