Abstract: A method which is easy to carry out for connecting domestic drainage conduits to collector sewers uses a special sealing sleeve, comprising a tubular, externally cylindrical body, the one side of which is closed by a thin elastic diaphragm, and on the other side of which, opposite the diaphragm, an outwardly projecting bead is mounted, and the inside wall of which forms essentially two stepped cones, the wall thickness increasing toward the diaphragm. The domestic drainage pipe, together with the sealing sleeve, is inserted in the collector sewer from the outside. The sealing sleeve allows a repair of defective domestic drainage conduits without extensive earth works.