Washer machine (10) for objects, comprises an inner washing chamber (14), accessed through an aperture (16) associated with a closing device (22) comprising a door (24) cooperating with peripheral edges (20) that delimit said aperture (16). The closing device (22) comprises a plurality of pneumatic gaskets (26, 28), each of which is connected to its own pressurized pneumatic means (30, 32), operatively independent of each other and able to introduce a pressurized fluid inside the respective gaskets (26, 28), selectively determining a dilated operating condition thereof to achieve the hydraulic seal.
