A device for edge sealing of a part or a window pane of a vehicle body, which device has a fastening dement that fastens the sealing device to a body flange and retaining a sealing strand. The fastening element has a main leg, to which a decorative element is fastened, which has a surface visible after installation on the vehicle body, and a connecting leg, which protrudes from the main leg and is provided for holding the sealing strand. The fastening element and the decorative element and/or the sealing strand are formed of plastic or fiber composite material and the fastening element and the decorative element and/or the sealing strand are molded onto each other by injection molding. The fastening element and the decorative element and/or the sealing strand are produced by multi-component injection molding. The invention further relates to a method for producing such a sealing device.