The invention relates to a sealing bellows (30) comprising a deformable wall configured to cover a drive shaft (40) of a gearbox lever (10), which is composed of a plurality of accordion bends (33).The invention comprises a sealing bellows (30) made of elastic deformation material and a plane support surface (35),The edge of one end wall of the sealing bellows (30) protrudes radially,The acting force applied on the plane supporting surface (35) enables the sealing bellows (30) to compress according to the longitudinal axis (x) of the sealing bellows (30),When the force stops, the seal bellows (30) covers its initial shape.Figure 6
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