Personal advice: +49 37208 882 882 Clear guidance for campers across Europe

Porzellan einfach nachrüsten

Plastik-Gefühl im Campingklo? In 15 Minuten zur Porzellantoilette.

Rüsten Sie die Kunststoffschüssel Ihrer vorhandenen Thetford-Kassettentoilette mit einem passgenauen Porzellaneinsatz nach. Kein kompletter Toilettentausch und keine handwerklichen Vorkenntnisse nötig.

Direkt vom Erfinder und Entwickler zu Ihnen.

  • 15minutes of fitting time*
  • 0special tools required
  • 100+years of porcelain expertise
TWUSCH Nordamerika – wenn die Töchter mit dem Papa

*Approximate active fitting time. Observe the sealant manufacturer's curing time before use.

Model-specificFor selected toilet series
Easy to cleanSmooth glazed porcelain
Personally advisedBefore and after your purchase
Direct from the inventorDeveloped and personally supported by Toni

The sensible upgrade

Porcelain comfort without replacing the toilet.

The existing toilet, cassette and slide mechanism stay in place. Only the inner surface is upgraded with a precisely shaped porcelain insert.

01

Smooth surface

Glazed porcelain is pleasant and straightforward to clean in everyday use.

02

Low added weight

More porcelain comfort with much less weight than a complete ceramic toilet.

03

Precise fit

Each version is shaped for a specific toilet series and checked before ordering.

04

Beginner-friendly

Clearly explained fitting that can also be completed without previous DIY experience.

TWUSCH porcelain insert

Upgrade a Thetford camping toilet from plastic to porcelain.

The model-specific porcelain inlay is fitted into the existing plastic bowl of selected Thetford cassette toilets in motorhomes and caravans.

Upgrade instead of replacing

The toilet housing, cassette and slide mechanism remain in use. Only the inner surface is upgraded with glazed porcelain.

Made for Thetford series

Separate TWUSCH versions are available for C2/C3/C4, C200, C220, C250, C260, C400 and C500 toilets.

Direct from Toni

Anton “Toni” Süppmayer invented and developed the porcelain insert and offers personal model advice before ordering.

See the difference

From a plastic surface to glazed porcelain.

Drag the handle to compare the illustrative plastic bowl with the real installed porcelain surface.

  • A smooth, glazed inner surface
  • The existing toilet housing remains in place
  • Cassette and slide mechanism continue to be used

The “before” view is an illustrative reconstruction based on the real installation photo; actual plastic surfaces vary by model and age.

Installed porcelain surface
Illustrative plastic surface before fitting
Before After
Top view of an installed porcelain insert ≈ 15minutes

Child's play, clearly explained

Three steps. Around 15 minutes of active work.

The complete toilet does not need to be removed. Work carefully, follow the supplied instructions and allow the sanitary sealant to cure fully.

  1. 1

    Check and clean

    Remove the cassette, test the fit and degrease all bonding surfaces.

  2. 2

    Insert and seal

    Align the porcelain insert and seal the upper edge with suitable sanitary silicone.

  3. 3

    Allow to cure

    Wait for the sealant manufacturer's stated curing time before first use.

The story of Toni

Toni

Inventor · Developer · Innovator

A life on wheels—and on his own feet

Toni did not discover camping in brochures, but in childhood. Every summer, the family packed the caravan and set off. What was a holiday for others became his school of close observation: How do you live in a few square metres? What works on the road—and what becomes annoying every single day? Toni did not research campers’ needs. He grew up with them.

He learned just as early what it means to take responsibility. Toni has been self-employed throughout his working life—first in his father’s company, later building his own. Being employed, waiting for instructions or passing problems to someone else was never his way. When something did not work, he repaired it himself. When the right product did not exist, he built it himself.

The turning point—and the return to camping

Then came the stroke. A moment that calls many things into question—and clarifies what truly matters. Toni and his wife Katja drew a conclusion typical of him: not retreat, but a new beginning. They bought a motorhome. Since then, the two have travelled again and again, and Toni suddenly found himself back in the world of his childhood—this time with the eye of an entrepreneur and inventor.

The Twusch: how an everyday nuisance became a product

Anyone who travels by motorhome knows the problem few people like to discuss: the cassette toilet. Plastic that absorbs odours, surfaces that never feel completely clean, and cleaning chemicals that merely mask the problem. Millions of campers had accepted it. Toni had not.

His idea was as simple as it was unheard of: porcelain. The material trusted at home for generations—hygienically smooth, odour-neutral and durable—as a precisely manufactured insert for the camping toilet. Initial reactions ranged from sceptical to dismissive. Porcelain in a moving vehicle was considered absurd: too heavy, too fragile, nobody would buy it.

Toni persisted. Two years of development, countless trials—and a great deal of broken porcelain—went into reaching series production. He found a German porcelain manufacturer with more than 100 years of experience, continued refining fit and production, and launched the Twusch through his own online shop, without a corporation behind him.

Campers proved him right: hundreds of enthusiastic reviews, recommendations from specialist publications—including PROMOBIL and Reisemobil International—and eventually the interest of an international industry group that acquired the brand. The “absurd idea” had become a product that changed an entire niche.

And today?

The Twusch demonstrates three things about Toni: he recognises real problems because he is a camper himself. He is not deterred by initial resistance. And he takes ideas all the way to series production and the customer—not merely to a prototype.

Anyone who knows Toni can already guess: he is working on another project—the ToniCube. Absolutely innovative, with the potential to fundamentally change mobile and stationary heating. No more will be revealed here yet. Stay curious—and if it has already sparked your interest, Toni will gladly answer questions personally.

Toni und Katja gemeinsam unterwegs
Katja hält Toni den Rücken frei – ganz gleich, mit welcher verrückten Idee er um die Ecke kommt. Und davon gibt es immer wieder neue: Gerade arbeitet Toni an einem noch geheimen Projekt, dem Cube. Weiteres folgt.

Model finder

Which toilet is fitted?

Choose the toilet series. The type plate inside the toilet compartment is decisive—not only the number on the cassette.

Not sure? Send us a photo of the type plate or cassette.
1Select toilet series
Your selection

Porcelain insert PI-C220

For selected toilets in the C220 series.

Current price, stock and delivery time are shown in the shop.

On twusch.de, the button adds the selected item to the basket and opens checkout. In this local preview it opens the exact product page at the basket button.

TWUSCH porcelain inserts by toilet series

Open the matching product page directly. If you are unsure, send us a photo of the type plate or cassette first.

Useful on every trip

The camping guide for Europe.

Practical articles on camping accessories, camper meetings, motorhome pitches and campsites.

Read all 15 articles

Good to know

Frequently asked questions

Straight answers about selection, fitting and everyday use.

Does an insert fit every camping toilet?

No. The shape must match the toilet series exactly. Check the type plate before ordering.

Does the toilet have to be removed?

Normally not. The insert is fitted into the existing plastic bowl. Follow the supplied fitting instructions.

Is fitting really possible without DIY experience?

Yes, the active fitting is deliberately simple and usually takes about 15 minutes. Careful cleaning, alignment and the full curing time remain important.

Can the cassette still be used?

Yes. With the correct model and proper fitting, the cassette and slide mechanism remain unchanged.

How is the surface cleaned?

Use mild porcelain-compatible cleaners and a soft cloth or sponge. Avoid strongly abrasive products.

Personal rather than anonymous

We will help you choose the correct version.

Send a photo of the toilet type plate or call us. Anton Süppmayer will check which version fits.

Your model is selected:C220Order in the shop