Thetford Twusch Porcelain Cassette Toilet Bowl Insert - C2/C3/C4

Currently unavailable

Currently unavailable
The Thetford Twusch porcelain insert is designed for caravan, motorhome, and campervan owners seeking to upgrade their existing C2, C3, or C4 cassette toilets. By adding a nano-sealed porcelain surface to your standard plastic bowl, this insert significantly improves hygiene and ease of cleaning, though it requires a precise installation process using sanitary silicone.
| Model Part Number | 201740 |
|---|---|
| Brand | Thetford |
No, the insert weighs only 800g, which is negligible for almost all caravan and motorhome weight limits.
You should avoid harsh, abrasive cleaners or scouring pads, as these can damage the nano-sealed finish. Use mild, non-abrasive liquids.
No special tools are required, though you will need a tube of sanitary silicone and a caulking gun for clean application.
Once the silicone is applied and cured, the insert is considered a permanent upgrade to your toilet system.
No, this specific model is precision-engineered only for the C2, C3, and C4 series.
The nano-seal creates a hydrophobic surface that repels water and waste, making the toilet much easier to flush clean and less prone to bacteria.
This indicates an incomplete silicone seal. You must remove the insert, thoroughly clean away old silicone, and re-apply a continuous, gap-free bead.
Ensure the insert is properly centered during installation; an offset placement can disrupt the natural flow of the flush water.
The Twusch is designed exclusively for the Thetford C2, C3, and C4 cassette toilets. Installation requires a clean, dry existing bowl surface. You must apply a bead of high-quality sanitary silicone to the outer edge of the Twusch insert, carefully position it inside the existing plastic bowl, and press firmly to create a watertight seal. It is critical to ensure no gaps remain where waste could seep behind the insert. Allow the silicone to cure for the manufacturer-recommended time (typically 24 hours) before the first use. For ongoing care, clean only with a soft cloth and non-abrasive, bathroom-safe cleaning agents to maintain the integrity of the nano-coating.