A suction head comprising: - a main body including a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and a suction mouth opening into the lower face of the sole, - a rear sealing member located at the rear of the suction mouth, the rear sealing member including a fixing part which is fixed in a receiving housing provided on the main body and a rear sealing lamella which is connected to the fixing part, the rear sealing member being elastically deformable between a first configuration in which the rear sealing lamella projects from the lower face of the sole and a lower edge of the rear sealing lamella is located at a first distance of the suction mouth and a second configuration in which the lower edge of the rear sealing lamella is located at a second distance from the suction mouth which is greater than the first distance, characterized in that the receiving housing includes: - a first housing part (23.1) in which at least one front part of a front longitudinal portion (22.1) of the fixing part is received and held, the fixing part being configured to be elastically deformed at the front longitudinal portion (22.1) during an elastic deformation of the rear sealing member between the first and second configurations, and - a second housing part (23.2) in which a rear portion (22.2) of the fixing part is movably mounted, the second housing part (23.2) delimiting a vertical clearance which is located above the rear portion (22.2) when the rear sealing member occupies the first configuration and which is configured to allow a lifting of the rear portion (22.2) during an elastic deformation of the rear sealing member towards the second configuration. - a main body including a sole provided with a lower face configured to be oriented towards a surface to be cleaned, and a suction mouth opening into the lower face of the sole, - a rear sealing member located at the rear of the suction mouth, the rear sealing member including a fixing part which is fixed in a receiving housing provided on the main body and a rear sealing lamella which is connected to the fixing part, the rear sealing member being elastically deformable between a first configuration in which the rear sealing lamella projects from the lower face of the sole and a lower edge of the rear sealing lamella is located at a first distance of the suction mouth and a second configuration in which the lower edge of the rear sealing lamella is located at a second distance from the suction mouth which is greater than the first distance, - a first housing part (23.1) in which at least one front part of a front longitudinal portion (22.1) of the fixing part is received and held, the fixing part being configured to be elastically deformed at the front longitudinal portion (22.1) during an elastic deformation of the rear sealing member between the first and second configurations, and - a second housing part (23.2) in which a rear portion (22.2) of the fixing part is movably mounted, the second housing part (23.2) delimiting a vertical clearance which is located above the rear portion (22.2) when the rear sealing member occupies the first configuration and which is configured to allow a lifting of the rear portion (22.2) during an elastic deformation of the rear sealing member towards the second configuration.