Active sealing/locking using the constriction principle

A sealing system for an opening in a wall surface, which can be closed by means of a leaf, the sealing system comprising:

• the wall surface with the opening having a circumferential inner surface,
• the leaf adapted to the geometry of the opening in such a way that the leaf is configured to be inserted into the opening and close the opening, wherein a circumferential outer surface of the leaf is arranged facing the inner surface of the opening in a closed state,
• characterized in that a sealing device is provided, which is formed by
• a first sealing element, which is arranged in the inner surface of the opening and can be moved towards and away from the outer surface of the leaf in the closed state,
• a drive element, which, when activated, drives the first sealing element in an opening plane of the opening towards the outer surface of the leaf into a sealing position and produces a force in the direction of the outer surface of the leaf such that when the opening is in the closed state, the first sealing element comes into sealing contact with the outer surface when acted upon by the force, a circumferential tensioning element extending continuously around a periphery of the opening, wherein the circumferential tensioning element is configured, upon actuation, to uniformly constrict the leaf within the opening and thereby provide a circumferential sealing and/or locking effect.