Heat accumulation segment for sealing a flow channel of a flow rotary machine

a heat shield segment is described, for local separation of a flow duct (K) inside a turbo engine, in particular gas turbine plant, with respect to a flow channel (K) radially surrounds the stator housing, with two axially opposite joining contours (7, 8) each in engagement with two along the flow channel (K) axially adjacent components (1, 1 ') can be brought, to the joining contours (7, 8) each have a counter-contoured receiving contoured element (9, 10) provide, of which at least one receiving contour (10) an axial clearance (11) along which the joining contour joined in it (8) is axially displaceable, whereby between the axially displaceable joining contour (8) and the receptacle contour (10) at least one sealing means (12) is provided. The invention is characterized in that the sealing means (12) within the reception contour (10) or the joining contour (8) is rotatably movable so that the sealing means (12) against a surface region (17) of the receiving contour (10) or the joining contour (8) acted upon by force is deflectable.