Waring
Waring is a commercial-equipment brand, not a plastic-free one, but its stainless steel blender jars solve the core problem with countertop blenders: they keep the high-friction, high-heat blend wall off Tritan/polycarbonate. The lid and blade-base gasket are still plastic and rubber, so the unit isn't fully plastic-free, but the vessel and blade are steel.
How clear are their specs?
Lists the stainless steel container option per model, but doesn't fully spec the lid and gasket materials.
