The world's first separating sealing toilet.

PREORDER

S1 Dry Flush Sealing Toilet

$1,199.00

$1,500.00

The S1 is available for Pre-Order only. New orders are estimated to ship in June 2026.

Push a button. Waste is heat-sealed automatically. Urine diverts separately so you only bag what you actually need to. No composting. No layering. No process. Just clean, odor-free off-grid living.

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. No "eww" moment.
50+ seals per charge: rechargeable Li-ion battery powers the sealer. No mains power, no wiring, no venting needed.
Choice of bags: compostable for eco-conscious users, recycled plastic for longer storage. You're not locked in.
Waterless and chemical-free: no blue juice, no enzymes, no plumbing. Just separate, seal, and go.

What's in the box?

S1 Dry Flush Sealing Toilet
Manual
Sealing Unit
Solids Bin
Urine Bottle with one-way valve
Power Adapter
Compostable Liner
High Barrier Liner
Battery Box
Bag Pusher

Technical Specs

Dimensions: D X W X H: 17.0" x 15.2" x 16.5"
Solids Container Capacity: 1.5 gallon (15.7 liter)
Urine Bottle Capacity: 1.7 gallons (6.4 liter)
LED Urine Level Indicator: An LED light alerts users when the urine bottle is full.
Material Composition: ABS plastic body, stainless steel hinges, waterproof connectors
Weight: Approx. 29 lbs (13.2 kg)
Portability Features: Sturdy side handles for effortless transport

Delivery & Returns

Delivery
Free shipping on orders over $150 in USA 48 and Canada.

Canadian orders ship from our 3pl in Canada.

Deliver Time is estimated 3-5 days depending on location. We use UPS ground at standard in USA - No PO Boxes.

Returns
No problem if you change your mind! We make returns super easy by covering the cost and offering a full refund if you're unhappy for any reason within 30 days of receiving Cuddy, as long as you haven't used it and return it in the original packaging.

Return Policy

Separate

Heat Seal

With the push of a button the automatic sealing mechanism hygienically seals solid waste

Hassle Free Disposal

The S1 seals each #2 in a small bag, making it easier to empty whenever you want.

Super Simple

Four steps easy steps.

1. Sit & go normall

Urine diverts automatically into the sealed bottle. Solids drop into the extra-large drop zone onto the bag cartridge.

2. Tap to seal

A single press triggers the battery-powered heat sealer. Waste is wrapped, sealed, and out of sight — in seconds.

3. Empty urine when LED lights

The LED indicator tells you when the 1.7-gallon bottle is full. Opaque bottle — discreet to carry and empty.

4. Swap Liner as needed

One liner roll = ~25 flushes. When empty, drop in a fresh one. Recharge the battery — 50+ seals per charge.

Backup mode: If you ever run out of liners, the S1 keeps working — it simply operates as a standard urine-diverting toilet until you get more. No being stranded. No chemical additives. Ever.

Why People Choose
S1 Sealing Toilet Over Other Dry Flush Toilets

Other Dry-Flush Toilets

Pee into the 1.7-gallon bottle — no bag used

Choice of compostable or recycled-plastic bags

Up to 25 flushes per cartridge

Up to 80% less bag waste

Backup mode if bags run out — still works as a diverting toilet

The Perfect Balance of Comfort and Freedom

RV & Motorhomes

Tiny Homes

Boats

Campervans

Off-Grid

Home Use

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.
The heat-sealing mechanism runs on an internal rechargeable 12V Li-ion battery — good for 50+ seals per charge. No mains power, no wiring into your van, no 12V connection required. You just charge it with a standard cable when it runs low. The LED urine indicator runs separately off a 9V battery (not included).
Each liner roll gives ~25 uses. 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.
The bottle holds up to 20 liquid uses — roughly every few days for 2 people. The LED indicator tells you when. Takes about 30 seconds. That's the only routine task the S1 asks of you.
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.
The S1 has a built-in backup mode — it converts to a standard urine-diverting toilet if you run out of cartridges. You're never left without a working toilet. Refills are available on Amazon Prime for fast delivery wherever you are.

Separate. Seal. Go.
This is the S1.

Ships May 2026 · 30-day returns · 2-year warranty · Free shipping to continental US & Canada

The world's first separating sealing toilet. Designed with our community, for our community.

The world's first separating sealing toilet.

S1 Dry Flush Sealing Toilet