A cup-shaped housing assembly for a device for separating liquid from air has a cup-shaped housing body having an interior. At least one annular filter element for separating liquid from air is arranged in the housing body. A housing cover closes off an end face of the housing body. The housing cover has an inner side that is facing the interior and an outer side that is facing away from the interior. The housing cover has at least one raw air inlet through which raw air is supplied to the interior. The housing cover has at least one clean air opening though which filtered clean air is discharged from the interior. For sealing the raw air inlet relative to the clean air opening, at least one sealing surface is arranged at the outer side of the housing cover across sections thereof.