A method of fabricating a motor-pump combination with the motor including a stator including a plurality of teeth extending between opposite stator end faces and a plurality of tooth tips defining a generally axial bore, the method including: forming a magnetic portion of a generally annular sleeve by compression molding a plurality of axially extending ferromagnetic strips using a plastic binder; forming a non magnetic portion of the annular sleeve by injection molding plastic material between adjacent ferromagnetic strips; molding a resin material casing member for the pump with the casing member having a generally annular cylindrical section and including the annular sleeve in part in the annular cylindrical section; and inserting the annular cylindrical section into the bore of the stator and aligning the ferromagnetic strips of the annular sleeve in abutting engagement with the tooth tips on the teeth of the stator.