Abstract: Sealing device having an essentially flat opening area (14), an opening tab (18) formed in the opening area and an opening device (30) attached at a connection point (32) in the opening area. Moreover, through leverage action, the sealing device is arranged to press down the opening tab in the opening area so that it creates an opening therein. After the opening is created, opening device (30) is arranged so that it can be twisted parallel with opening area (14) around connection point (32) until it reaches a resealing position where it closes the opening with a covering surface. To make it possible, in a simple manner, to block opening device (30) at the resealing position, it is proposed that among other things opening device (30) be provided at its periphery with blocking devices including at least one tab (36, 40) formed so that opening device (30) alternately engages the upper and lower edge areas of opening (22).

Abstract: Sealing device having an essentially flat opening area (14), an opening tab (18) formed in the opening area and an opening device (30) attached at a connection point (32) in the opening area. Moreover, through leverage action, the sealing device is arranged to press down the opening tab in the opening area so that it creates an opening therein. After the opening is created, opening device (30) is arranged so that it can be twisted parallel with opening area (14) around connection point (32) until it reaches a resealing position where it closes the opening with a covering surface.