The invention relates to a releasable holding device (1) for attaching objects to a contact surface (8), with a vacuum chamber (7), which is open towards the contact surface (8) and in which, after application to the contact surface (8) by means of a suction device (20) generating a vacuum, a vacuum can be generated, the vacuum drawing the holding device (1) onto the contact surface (8) with the use of an elastic seal (13) which is provided towards the contact surface (8) and, in the event of a vacuum, brings about the adhesive connection to the contact surface (8), wherein the elastic seal (13) consists of at least one encircling seal which is U-shaped in profile and the limbs (15) of which engage over an encircling press-on web (11) of the holding body (2) and the foot surface (14) of which is firmly pressed in order to form the vacuum chamber (7) and the seal between web front edge (11b) and contact surface (8). Suction device and holding device are of two-part design.
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