Rubber seal for a vacuum receptacle and lid for the receptacle utilizing the same

摘要

PURPOSE: A rubber sealing material is provided to facilitate mounting on a lid main body and to have an improved sealing force between the lid main body and the rubber sealing material. CONSTITUTION: A body part (141) has an empty space therein and wraps around a side wall of the empty space. An elastic sealing wing part (142) protrudes outwardly from the body part and is installed along a circumference of the body part. A multifunction wing part (147) protrudes outwardly from the body part at an upper part of the elastic sealing wing part and is installed along the circumference of the body part. An aeration part (143) is formed such that a space between the elastic sealing wing part and the multifunction wing part is always connected to an outer space. An adsorption groove (148) forms a sealed adsorption space between a bottom surface of a lid main body. A protrusion (143a) is protruded upwardly on an upper surface of the elastic sealing wing and arranged along a columnar direction.