An integrated protection component for a sealing ring and associated sealing system for a vehicle transmission component, including a plug that can be inserted inside the sealing ring and an annular element for protecting the sealing ring during insertion of a rotating shaft is provided. The annular element includes a flange-shaped end and a tubular side wall that directly comes into engaging contact with the sealing ring and receives inside it the rotating shaft. The first end being provided with a handle, the plug engaging in a removable manner with the annular element and the tubular side wall being provided with a first weakened zone formed longitudinally alongside a second, radially formed, weakened zone of the first end so as to break following a pulling force exerted manually on the handle.