Abstract: A water-sealed type pot in which water can be retained between a flange portion at the upper portion of the pot body and its lid to obtain a sealing property. The lid includes a steam escape hole around which a valve seat is formed. Since a valve member is slidably provided on the valve seat, it can be selectively changed over between a position for opening the hole and a position for closing it. Although the valve member is pressed against the valve seat by a spring, it can rotate around the axis defined by the knob on the lid. In order to reduce friction during rotation, at least one of the slide surfaces of the valve member and of the valve seat is formed of polytetrafluoroethylene.