Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exterior Components› Weatherstripping and Rubber Details
Thetford
THETFORD LIP SEAL
SKU: T00Z 23721
Beginner — under 30 min
Overview
Show original supplier description
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Thetford |
| Part Number | T00Z 23721 |
Videos
Thetford toilet cassette lip seal replacement Our Van RV
Practical Caravan – how to replace a Thetford toilet cassette seal
How To Replace Thetford Cassette Toilet Seal Hymer CamperVan
Qube | Lip seal (07101) replacement | Porta Potti | THETFORD repair instructions
C2 / C3 / C4 before 15 June 2000 | Lip seal (16175) replacement | Cassette toilet | THETFORD
THETFORD | Hoe repareer je een lekkend cassette toilet en hoe vervang je de lipseal?
C250 / C260 | Bowl retainer bracket (50733) replacement | Cassette toilet | THETFORD
Thetford Cassette Toilet Install
C2 / C3 / C4 before 1994 | Waste holding tank (20063874-20063974) replacement | Cassette toilet
C500 | Automatic vent (2372206) replacement | Cassette toilet | THETFORD repair instructions
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy