Abstract: A gas turbine with a turbine housing which includes at least one regenerative chamber for the accommodation of a regenerative heat-exchanger adapted to be set into rotation and closed against the outside by a housing cover whereby the housing separating surface is adapted to be brought into abutment with a corresponding cover separating surface of the cover, and in which at least one sliding seal adapted to be brought into sliding contact with the heat-exchanger is arranged in the chamber and is secured at one of two mutually elastic fastening members of a mounting means, whose other fastening member is anchored at a chamber wall of the turbine housing; the housing separating surface is thereby located in a plane at least approximately perpendicular to the axis of rotation, while the sliding seal with an unstressed mounting means is disposed recessed with respect to the housing separating surface in an assembly position.