A bearing seal (2) of a rolling bearing configured as a wheel bearing (1) that is connected between a first rotationally rigid bearing part (5) and a second bearing part (7) that is integral with a wheel bearing flange (8), between which rolling bodies (6) are guided. The bearing seal (2) includes a splash plate (3) configured as a preseal, which is supported on an axially and radially oriented contour (12) of the second bearing part (7), and together with the wheel bearing flange (8), axially defines a catch channel (24). A seal fitting (4) is fixed to the first bearing part (5) by a reinforcement (22), wherein the reinforcement (22) is enclosed by an elastic sealing material (21), at least in some areas, from which sealing lips (20, 28, 29) are formed, which are grindingly or non-grindingly associated with the splash plate (3). Between the splash plate (3), which abuts, in a line or surface contact, the radially oriented wheel bearing flange (8) via a support zone (10), and the sealing fitting (4), a sealing labyrinth (16) is provided. By way of a resiliently flexible fastening section (11), the splash plate (3) is pressed onto the cylindrical contour (12) of the second bearing part (7) and is pre-stressed in an end position.