Ottoni Fabbrica
Ottoni Fabbrica builds its electric kettles entirely in 18/10 stainless steel, including the anti-scale filter, with no plastic in contact with the water and no digital electronics. This is about as plastic-free as an electric kettle gets - the design is deliberately simple and analog. The one thing not explicitly enumerated on the product page is the lid/element seal, which on kettles of this type is conventionally a small silicone or rubber gasket.
How clear are their specs?
States 18/10 stainless construction and a stainless anti-scale filter with no plastic touching the water, but does not explicitly name the lid/seal material.
