A motor assembly having an outer stator, a rotor assembly, a separating can, and a bearing assembly (36, 37) with a first bearing and a second bearing, which rotor assembly has an inner rotor and a shaft and defines an axial direction and a radial direction of the motor assembly, which motor assembly has a magnetic air gap between the outer stator and the inner rotor, which separating can has a split tube section and a separating can base part, which split tube section has a split tube region, which split tube region extends through the magnetic air gap, which outer stator is disposed about the split tube region, which split tube section and which separating can base part overlap in a first predefined axial region, wherein a seal is provided in the first predefined axial region between the split tube section and the separating can base part, wherein the seal has a sealing member, wherein the split tube section has split tube section projections on its outer surface, wherein the outer stator has a stator core, a winding assembly, and a molded part, which molded part has a plurality of molded part projections, and which motor assembly defines a sealing member space in the first predefined axial region, which sealing member space - is radially inwards at least in sections defined by the split tube section radially inwards, - is radially outwards at least in sections defined by the separating can base part radially outwards, - is at least in sections defined on a first axial side by the separating can base part, and - is at least in sections defined on a second axial side situated opposite the first axial side by the split tube section projections or at least in sections by the molded part projections, wherein the sealing member is disposed in the sealing member space. which rotor assembly has an inner rotor and a shaft and defines an axial direction and a radial direction of the motor assembly, which motor assembly has a magnetic air gap between the outer stator and the inner rotor, which separating can has a split tube section and a separating can base part, which split tube section has a split tube region, which split tube region extends through the magnetic air gap, which outer stator is disposed about the split tube region, which split tube section and which separating can base part overlap in a first predefined axial region, wherein a seal is provided in the first predefined axial region between the split tube section and the separating can base part, wherein the seal has a sealing member, wherein the split tube section has split tube section projections on its outer surface, wherein the outer stator has a stator core, a winding assembly, and a molded part, which molded part has a plurality of molded part projections, and which motor assembly defines a sealing member space in the first predefined axial region, which sealing member space - is radially inwards at least in sections defined by the split tube section radially inwards, - is radially outwards at least in sections defined by the separating can base part radially outwards, - is at least in sections defined on a first axial side by the separating can base part, and - is at least in sections defined on a second axial side situated opposite the first axial side by the split tube section projections or at least in sections by the molded part projections, - is radially inwards at least in sections defined by the split tube section radially inwards, - is radially outwards at least in sections defined by the separating can base part radially outwards, - is at least in sections defined on a first axial side by the separating can base part, and - is at least in sections defined on a second axial side situated opposite the first axial side by the split tube section projections or at least in sections by the molded part projections, wherein the sealing member is disposed in the sealing member space.