Sealing element for sealing a rotating shaft

A sealing element for sealing a high-pressure side from a low-pressure side at a rotating shaft comprising:

• a supporting ring configured to be arranged on a stator surrounding the shaft;
• a first annular membrane protruding from the supporting ring, the first annular membrane facing in a direction toward the shaft;
• a second annular membrane protruding from the first annular membrane, the second annular membrane facing in the direction toward the shaft, and the second annular membrane including a sealing edge configured to be arranged lying on the shaft,
• wherein the first annular membrane is formed longer in an axial direction of the shaft than each of the supporting ring and the second annular membrane,
• wherein a first support surface is formed on the stator radially outside of the first annular membrane relative to the axial direction of the shaft, on the low-pressure side,
• wherein a second support face is formed on the stator axially on an outside of a transition between the first annular membrane and the second annular membrane relative to the axial direction of the shaft, on the low-pressure side, and
• wherein the first annular membrane has an outer circumferential surface and, under at least one pressure condition, the outer circumferential surface is configured to be pressed onto the first support surface and the transition is configured to be pressed onto the second support face.