Duo Multi-Cooker
Food-grade 304 stainless inner pot with a stainless lid underside and steel anti-block shield - the only food/steam-contact non-metal is the silicone sealing ring, landing it at silicone-only.
Plastic-free verdict: Silicone only
The inner cooking pot is uncoated food-grade 304 stainless, and the underside of the lid that faces the food and catches condensation is stainless too, with a 304 steel anti-block shield over the steam pipe. The one non-metal part in the sealed food/steam path is the silicone sealing ring (plus a small silicone float-valve cap). The plastic on the unit - outer lid housing, control panel, steam-release handle - sits outside the sealed cooking chamber. So contact-wise this is silicone, not plastic.
Verification: Manufacturer confirmed · reviewed 2026-07-05
What it's made of
| Part | Material | Food contact |
|---|---|---|
| inner cooking pot food-grade 304 (18/8), no chemical coating | Stainless Steel (304 / 18-8) | Yes |
| lid underside (food-facing) stainless; steam condenses on this surface inside the sealed chamber | Stainless Steel (304 / 18-8) | Yes |
| anti-block shield 304 steel shield over the steam release pipe | Stainless Steel (304 / 18-8) | Yes |
| sealing ring silicone gasket seating the lid; the main non-metal contact part, replaceable | Silicone | Yes |
| float valve cap small silicone cap on the float valve | Silicone | Yes |
| steam release valve / handle food-grade PP + steel; sits above the sealed chamber | Polypropylene (PP, | No |
| outer lid housing / control panel / handles | Plastic (other / unspecified) | No |
The mainstream electric pressure cooker, and a reasonable plastic-free-leaning rice option because the parts that actually touch food and steam are metal: a 304 stainless inner pot with no coating, a stainless lid underside, and a steel anti-block shield. The sealing ring is silicone - unavoidable for a pressure seal - which is why this lands at silicone-only rather than plastic-free. The bulk of the plastic (outer lid shell, controls, steam handle) never enters the sealed cooking chamber. Note that the silicone ring absorbs odors over time and is a wear part; genuine replacements are cheap.
Pros
- Uncoated 304 stainless inner pot and stainless lid underside
- Steel anti-block shield; food/steam path is metal except the seal
- Silicone sealing ring is replaceable (and swappable for a fresh one)
- Doubles as pressure cooker, sauté pan, yogurt maker, steamer
Cons
- Silicone sealing ring is required and absorbs food odors
- Plastic outer lid, control panel, and steam handle (out of food path)
- Not fully plastic-free; strict silicone-avoiders should use a stovetop pot
- Electronic unit is not as repairable/long-lived as a bare pot
Categories: Rice Cookers
Sources
Every material claim above is backed by these. This is the scattered info we centralized.
- manufacturer https://instantpot.com/pages/frequently-asked-questions inner pot is food-grade 304 (18/8) stainless with no chemical coating; sealing ring is silicone; float valve has a silicone cap
- manufacturer https://www.amazon.com/Instant-Pot-Stainless-Steel-Cooking/dp/B008BKHGX0 official stainless steel inner cooking pot listing (304)
- review https://www.amazon.com/Replacement-Instant-IP-DUO50-IP-DUO60-Anti-Block/dp/B0CH9RGFZ7 replacement-parts listing confirming the anti-block shield is 304 stainless and the steam release valve is food-grade PP + steel