Thetford C-402 Bench Seat Cassette Toilet - 850-99991

Thetford C-402 Bench Seat Cassette Toilet - 850-99991

Thetford toilets are a fully self-contained toilet system that can be built into the bathroom of caravans, motorhomes, narrow boats or any type of recreational vehicle. A Thetford cassette toilet is constructed of high quality plastic and consists of two sections, a permanently installed toilet system and a slide out waste holding tank located within the toilet. This is removed for emptying from outside the vehicle through a small service hatch. A unique rotating pour-out spout and vent button ensure splash-free emptying.

The Thetford C402 (C400 series) bench toilet is available with left hand and right hand side access to the cassette from outside of the vehicle. Please choose the option of the required cassette access side.

For new installations, we recommend purchasing an optional locker door to securely access your cassette from outside the vehicle for clean and hassle free emptying.

 Features

• Highest level of seating comfort on the market
• Lightweight, high-quality, durable plastic
• Quiet yet powerful electric flushing system with full bowl coverage
• Homelike bowl in size and comfort
• Has its own flush water tank that is filled from outside, through the lockable access door(NOT provided)
• Easy and convenient emptying
• Waste-holding tank indicates when it needs emptying
• Automatic pressure release vent prevents gas build-up, ensures splash-free tank opening
• Built-in rotating empty spout
  

What our Experts Think

• Comfortable Bench Seat Design: Provides a more natural sitting position, improving comfort for extended travel use in caravans and motorhomes.
• Efficient Cassette System: Removable waste tank allows for easy, hygienic emptying and simple maintenance on the go.
• Reliable Flush Performance: Designed to deliver consistent flushing for improved cleanliness and user convenience.
• Durable Travel Construction: Built to withstand vibration, movement, and frequent use in mobile environments.
• Space-Smart Installation: Compact integration makes it suitable for a wide range of RV bathroom layouts.
• Easy Maintenance Access: Designed for straightforward servicing and long-term reliability during touring and camping.

Q&A

Maintenance Tips

• Empty the cassette tank regularly and rinse thoroughly with clean water after each use to prevent buildup and odors.
• Use only Thetford-approved toilet chemicals to ensure effective waste breakdown and protection of seals and internal components.
• Clean the bowl, seat, and bench area frequently with mild, non-abrasive cleaners to maintain hygiene and surface quality.
• Inspect the sealing blade and rubber gaskets regularly for wear, stiffness, or leaks and lubricate with silicone-based lubricant.
• Check the electric flush system and water supply connections periodically to ensure smooth and consistent operation.
• Keep the cassette wheels, handle, and sliding mechanism clean for easy removal and transport.
• Ensure correct installation alignment when reinserting the cassette to avoid damage or sealing issues.
• Avoid using bleach or harsh household chemicals that can damage plastic parts and rubber seals.
• Store the cassette in a dry, ventilated area when not in use for long periods to extend service life.