Replacement Silicone Seal
The one part that wears out. We'll sell you a new one, for as long as you own the product.
The steel will outlast you. The seal won't — and we'd rather tell you that than let you find out.
The silicone seal in your lid is the one part of a Stainless Co. product that eventually wears out. After a few years of dishwasher cycles it compresses, loses its spring, and stops sealing the way it did on day one. That isn't a defect. It's what silicone does.
So we sell you a new one. For a few euros, for as long as you own the product.
That is the whole difference between a container you replace and a container you keep.
Each seal is cut for one specific lid. Choose the size that matches the product you already own — a 400 ml seal will not fit a 1200 ml lid, and the bottle cap ring fits nothing else.
These seals are not compatible with containers, lunch boxes or bottles from other brands. Seal geometry is specific to the lid it was designed for, and we would rather you buy nothing than buy something that doesn't seal.
Everything we make is 304 food-grade stainless steel and one food-grade silicone seal. That is the entire list, across the whole range — lids and bottle caps included.
This is the second material. We named it on the page before you found it in the box, and we'll keep it in stock for as long as you own the thing it belongs to.
Order before 12:00 on a weekday and it leaves our warehouse the same day. Everything ships tracked, so you can see where it is. Delivery after that: 1–3 business days in the Netherlands, 3–7 in the rest of the EU.
Batch cooking on Sunday. Leftovers on Monday. A snack in your bag on Tuesday. Our sets are built around the way people actually use containers — not the way they imagine they will. Sizes that stack, and two materials we name on the page.
The material
The one part that isn't steel.
Straight answers
No. Steel never goes in a microwave — not ours, not anybody's. It is the one real trade-off in owning steel, and we would rather you knew it before you bought than after. There is a short guide on the site for reheating without one.
Yes, all of it. Lids on the top rack. Let everything dry fully before you put it away — steel doesn't mind water, but water left standing leaves lime marks.
Leak-resistant, and we won't say leakproof. Upright in a bag or a fridge it holds. On its side with soup in it, we wouldn't bet on it. The seal is silicone and silicone wears out — which is why we sell spares instead of pretending it won't.
Yes. Steel doesn't go brittle in the cold and it won't crack the way glass can. Leave a couple of centimetres of headspace so the food has room to expand as it freezes.
No. Steel is non-porous, so garlic, curry and fish don't stay behind the way they do in plastic. The one place odour can linger is the silicone seal — take it out and wash it separately now and then.
Yes. Steel scratches — a fork, a brush and a dishwasher rack all leave marks eventually. The difference is what a scratch means. In plastic it is somewhere for oils and colour to settle. In steel it is cosmetic and nothing else.
