S1 Dry Flush
Sealing Toilet – 12V
$1,500.00USD · taxes calculated at checkout
This version of the S1 Dry Flush Sealing Toilet has no internal battery and runs straight off your rig’s power. There’s nothing to charge and nothing to remember.
Inside, it’s the same S1. Solids and liquids stay separate, and one push of a button heat-seals your solids in a bag. No composting, no layering, no blue juice.
- Urine-diverting = odor-free Liquids and solids never meet. No sewage. No smell.
- Automated heat-seal Push a button and solids are hermetically sealed in a bag. No manual wrapping. No exposure.
- Runs off your 12V system No internal battery. Wire it into your house (leisure) battery with a 10A fuse and you’re ready to go.
- Same footprint as Cuddy and Cuddy Lite All three share the same external dimensions, so it drops into a space planned for any of them.
- Waterless and chemical-free No blue juice, no enzymes, no plumbing. Separate, seal, and go.
Version
What’s in the box
- S1 Dry Flush Sealing Toilet
- Two high barrier liners
- Power cable for wiring into your 12V system
How do you power it?
All it needs is your rig’s 12V system. The S1 comes with its own power cable, so you just wire it into your house (leisure) battery with a 10A fuse and you’re ready to go.
The sealer pulls a short burst of current when it seals, so cable size matters. If you need to extend the run, use 14 AWG (2mm²) cable for your run length, and fit the fuse as close to the battery as you can.
The battery-free S1 runs on 12V only. It isn’t compatible with 24V systems, and it can’t be plugged into a household socket.
Not sure your electrical setup is up to it? Get in touch and we’ll help you work it out.
Technical specs
- Dimensions (D×W×H): 17.0″ × 15.2″ × 16.5″
- Weight: approx. 29 lbs / 13.2 kg
- Solids container: 1.5 gallon / 5.7 liter
- Urine bottle: 1.7 gallon / 6.5 liter
- Power: 12V only (11–14V supply). Not compatible with 24V systems or household sockets
- Urine indicator light: lights up when the urine bottle is full
- Material: ABS plastic body, stainless steel hinges, waterproof connectors
- Portability: sturdy side handles
For the most up-to-date information, please refer to the manual.
Delivery & returns
Free shipping on orders over $150 in the lower 48 states and Canada. Canadian orders ship from our 3PL in Canada. Delivery time is estimated 3–5 days depending on location. We ship UPS Ground within the US, and can’t deliver to PO boxes.
Changed your mind? Send it back unused, in its original packaging, within 30 days for a refund. Return shipping comes out of your refund. We’ll send you a prepaid label, so there’s nothing to pay up front. Read the returns policy
Manuals & guides
Super simple
Four steps.
No composting.
No layering.
Urine flows to the front into the urine bottle. Solids drop into a liner in the solids bin.
Push the button and the sealer does the rest, in about 3–5 minutes. Each #2 is sealed in its own bag.
The indicator tells you when the 1.7-gallon bottle is full. The bottle is opaque — discreet to carry and empty.
One liner roll is about 20–25 flushes. Empty the solids bin every 2–3 uses, and drop in a fresh roll when it runs out.
Out of liners? Remove the sealer, line the solids bin with a bag and use it like a Cuddy Lite.
The numbers
Specifications
at a glance
- S1 Dry Flush Sealing Toilet
- Two high barrier liners
- Power cable for wiring into your 12V system
Two versions
Which S1 is
right for you?
Go with the S1 12V if the toilet has a permanent home in your build and you have a 12V house system to wire it into. There’s no battery, so there’s nothing to charge.
The S1 with its own battery is for moving it around, or for builds without a 12V system.
Straight answers only
Common
questions
How is the S1 different from other dry-flush toilets?
Traditional dry-flush toilets bag every single use — liquid and solid together. You burn through expensive proprietary refills fast, and you’re effectively paying to seal urine in plastic.
The S1 diverts liquid into a separate 1.7-gallon bottle and only seals solids. That’s up to 80% less bag use, dramatically lower running costs, and far less plastic waste. It’s the first dry-flush toilet with urine diversion built in.
How often does the liner need changing?
Each liner roll gives about 20–25 flushes. For 2 people with regular use, that’s roughly every 1–2 weeks. Swap takes under a minute — no tools, no mess. Refills are available on CompoCloset.com and Amazon Prime.
How often does the urine bottle need emptying?
The urine bottle holds 1.7 gallons. For two people you will empty it every 1–2 days. The urine indicator light tells you when.
Already have a Cuddy or Cuddy Lite?
Good news — you don’t need to buy the full S1. The S1 Dry Flush Adapter Kit converts your existing Cuddy or Cuddy Lite into a sealing toilet. Plug-and-play, no permanent modifications required.
What happens if I run out of bag liner refills on the road?
The S1 has a built-in backup mode — it converts to a standard urine-diverting toilet if you run out of bag liners. You’re never left without a working toilet.
The other way
Already own a Cuddy
or Cuddy Lite?
The S1 Dry Flush Adapter Kit retrofits the sealing mechanism to the toilet you already have. Same footprint, same seat — new trick.
Time to 💩 or get off the pot
Push a button.
Never see it
again.
2-year warranty · free shipping to the continental US & Canada over $150
