On a sealing plug (10) for sealing an opening (12) in a component (14), in particular in a vehicle body part, comprising a base body (16) which can cover the opening (12), a plurality of projecting latch elements (34) which can latch onto the rear wall of the component (14) are provided on the rear face of the base body (16). Further, a plurality of centring elements (40, 48) arranged separately from the latch elements (34) are provided on the rear face of the base body (16) and can lie resiliently flexibly against the edge (54) of the opening (12).