An improved structure of a vacuum ash can, comprising a can body, a can lid, a sealing gasket and a valve body, the opening of the can body having a lip, the can lid comprising one of the lips a cover edge and a protrusion extending into the opening of the can body, the sealing gasket is in the shape of a ring and is elastic and flexible, and is sleeved on the convex portion, and the sealing gasket comprises vertically connected a horizontal piece and a vertical piece, the horizontal piece being sandwiched between a top surface of the lip and a bottom surface of the cover edge, the vertical piece being sandwiched between the inner wall of the can body and the convex part Between the outer walls, the horizontal spacer ring on the outer peripheral surface of the vertical piece is provided with a plurality of embossed annular ribs which can be pressed and deformed against the inner wall of the can body, and the valve body is coupled to The top surface of the can lid can be vacuumed with an air pump； the structure has the advantages of good sealing effect and reduced manufacturing cost.一種真空式骨灰罐改良結構，包括一罐身、一罐蓋、一密封墊圈及一閥體，該罐身之開口具有一唇緣，該罐蓋包含有可蓋設在該唇緣上之一蓋緣及可延伸入該罐身之開口中之一凸部，該密封墊圈呈環圈狀且為具彈性之軟性材質，其係套設於該凸部上，該密封墊圈包含有呈垂直相連之一橫片及一立片，該橫片可被夾設在該唇緣的頂面與該蓋緣的底面之間，該立片可被夾設在該罐身的內壁與該凸部的外壁之間，該立片之外周面上水平間隔環設有凸出狀之複數環形肋條，該複數環形肋條可抵頂於該罐身之內壁而被擠壓變形，該閥體結合於該罐蓋的頂面，且可配合一抽氣筒將該骨灰罐的內部抽成真空狀態；藉由上述結構係使其具有良好密封效果及可降低製作成本之功效。
