

Toilet Cassette Seal for Thetford,110mm Replacement Rubber Flush Gasket,RV Toilets Lip Seals Compatible with Thetford C200 C250 C260 C400 Models for Caravan Motorhome Waste Tank Spares Parts
About this item
- 1. You will receive a directâfit replacement rubber seal designed specifically for Thetford cassette toilets â measuring 110 Ă 110 Ă 20 mm with a 75.4 mm inner diameter, this gasket fits models C200, C250, C260, and C400, restoring a tight, leakâproof and odourâtight closure for your waste tank.
- 2. Crafted from highâgrade, resilient rubber compound, this seal maintains its elasticity under repeated compression and across a broad temperature range. The material resists degradation from waste fluids, cleaning agents, and UV exposure, ensuring a long service life in demanding mobile environments.
- 3. Precisionâmoulded with a specialised lipâseal profile, the gasket features a smooth, burrâfree surface that matches the original equipment dimensions. Its squareâcut design and exact outer/inner diameters guarantee a snug, positive fit around the outlet spigot, eliminating the need for trimming or additional adapters during installation
- 4. Ideal for caravan owners, motorhome travellers, and RV enthusiasts who perform their own routine maintenance, this spare part is suitable for seasonal servicing or immediate replacement when the existing seal turns hard, cracked, or starts to leak. It effectively contains unpleasant odours, prevents spillage during travel, and helps keep your onboard sanitation system hygienic and fully functional.
- 5. We appreciate your selection of this replacement gasket for Thetford cassette toilet. Our commitment is to supply reliable, wellâengineered spares that support your touring lifestyle. If you have any questions regarding fitment or installation, please feel free to reach out â we are here to help ensure your complete satisfaction with the product.
Product description
This replacement toilet cassette seal is precision-engineered to restore a watertight and odor-proof seal on your RV or caravan waste tank. Manufactured from durable, high-grade rubber, this gasket withstands repeated compression, temperature fluctuations, and exposure to waste fluids, ensuring long-lasting performance in mobile sanitation systems. With outer dimensions of 110 Ă 110 Ă 20 mm and an inner diameter of 75.4 mm, this flush gasket is specifically designed as a direct-fit replacement for Thetford cassette toilets, including popular models C200, C250, C260, and C400. The lip-seal construction creates a positive compression fit around the outlet spigot, preventing leaks during travel and usage while keeping unpleasant odors contained. Installation is straightforwardâsimply remove the old worn or hardened seal, clean the mating surfaces, and press this new rubber flush gasket into place. No special tools or adhesives are required. Regular replacement of this wear-part component helps maintain optimal waste system hygiene, reduces the risk of spillage, and extends the service life of your motorhome or caravan toilet assembly. Compatible with a wide range for Thetford cassette systems, this spare part serves as an essential maintenance item for touring enthusiasts who demand reliability from their onboard sanitary equipment. Whether you are preparing for a long journey or performing routine servicing, this replacement seal offers a cost-effective solution to keep your toilet cassette functioning as intended.
Product details
Customer reviews
What customers say about Bigamart
10 Trustpilot reviews total, with 2 shown at a time.
I wrote to Bigamart's customer support and they accompanied the process of reshipping the item until it finally arrived. I felt a genuine effort to solve the problem till it was finally solved.
The package was here in Australia from England in a few days â so quick! Something was missing and they refunded it straight away. Pretty happy with these guys.
You might also like
Similar items




