Sealing device (100, 600) for at least one window element and/or door element (200, 300), wherein the window/door element can be arranged in a wall opening of a building, the sealing device comprising: at least one first sealing means which can be arranged substantially parallel to a horizontal side of the window/door element; and at least one second sealing means which can be arranged substantially parallel to a vertical side of the window/door element, wherein the sealing means (610, 620) are each arranged in a first recess of a first profile element, wherein the sealing means in a first state sealingly close a space between an edge of the window/door element and an opposite side of the wall opening and, in a second state, are spaced apart from the edge of the window/door element or the opposite side of the wall opening, wherein the first recess substantially completely receives the sealing means in the second state and the sealing means are substantially flush with the first profile element, wherein the second sealing means has a recess at at least one end of the sealing means, wherein the recess corresponds to the negative shape of the first sealing means and, in the first state, buts against the first sealing means and sealingly closes an opening between the first and the second sealing means, wherein each sealing means (610, 620) has at least one sealing profile, each sealing profile having at least one sealing lip which is arranged in the longitudinal direction of the sealing profile and can be moved back and forth substantially vertically to the longitudinal direction of the sealing profile and wherein, in the first state, each sealing profile lies sealingly against the first profile element at least with the movable sealing lip and the sealing lip lies sealingly against an opposite second profile element. at least one first sealing means which can be arranged substantially parallel to a horizontal side of the window/door element; and at least one second sealing means which can be arranged substantially parallel to a vertical side of the window/door element, wherein the sealing means (610, 620) are each arranged in a first recess of a first profile element, wherein the sealing means in a first state sealingly close a space between an edge of the window/door element and an opposite side of the wall opening and, in a second state, are spaced apart from the edge of the window/door element or the opposite side of the wall opening, wherein the first recess substantially completely receives the sealing means in the second state and the sealing means are substantially flush with the first profile element, wherein the second sealing means has a recess at at least one end of the sealing means, wherein the recess corresponds to the negative shape of the first sealing means and, in the first state, buts against the first sealing means and sealingly closes an opening between the first and the second sealing means, wherein each sealing means (610, 620) has at least one sealing profile, each sealing profile having at least one sealing lip which is arranged in the longitudinal direction of the sealing profile and can be moved back and forth substantially vertically to the longitudinal direction of the sealing profile and wherein, in the first state, each sealing profile lies sealingly against the first profile element at least with the movable sealing lip and the sealing lip lies sealingly against an opposite second profile element.