Abstract: The invention relates to a method and a fixing system for clamping elastic rubber sealing elements, also in the form of hollow chamber profiles on thin-walled supports, for example, chassis sheet metal or other sheet metals with a 3-D external skin contour. Sealing elements, serve in particular on motor vehicles for sealing, damping, gap-filling and similar. A known or related type of clip (1) is arranged on one side of the support (2), with sealing element (4) and clamp strip (3) on the opposite side thereof, such that the fixing is achieved by means of aligned holes on the support, sealing element and clamp strip, through each of which a clip is inserted with the expanding arms pushed through, whereupon the expanding arms lock out and the clip in the opposing clamp strip (3) is thus arranged on a sealing element or within the hollow chamber of a sealing element as a one-piece whole or multi-piece components with a contour fitted to the 3D form of the relevant fixing section.