A sealing element including a cover strip, in particular for sealing a window pane at the inlet of a window channel into which the window pane can be retracted. A portion of the sealing element, which portion is to be produced by injection molding, is connected to the cover strip by being molded onto the cover strip. In a corresponding method, the cover strip is preheated such that its shrinkage is matched to the shrinkage of the molded-on material, until the cover strip has cooled down to approximately the ambient temperature.