Abstract: Fixed seal means partition a disc type rotary regenerator for an automotive gas turbine engine into an inlet air heating section for conducting cool high pressure inlet air therethrough in one axial direction and an exhaust cooling section for conducting hot low pressure exhaust gas therethrough in the opposite axial direction. The seal means comprises a non-rotatable rubbing seal having an inner surface in sliding sealing engagement with an axial end surface of the regenerator and also comprises a channel shaped non-rotatable static seal having one channel side in sliding sealing engagement with a movement limiting stop fixed with respect to an outer surface of the rubbing seal at the low pressure side thereof and having a second channel side in sliding sealing engagement with a fixed housing portion of the engine.