Patent ID: 7338253

Claim:
A sealing arrangement for a stator shroud of a multi-stage gas turbine comprising: at least one shroud segment having a leading edge and a trailing edge with respect to a hot gas path through the turbine, each shroud segment comprising an outer shroud and at least one inner shroud connected thereto; said outer shroud having first and second grooves defined adjacent to and along said leading and trailing edges; said at least one inner shroud having a leading edge axially projecting hook portion and a trailing edge axially projecting hook portion for respectively engaging said first and second grooves of said outer shroud, said engagement connecting said inner shroud to said outer shroud; an impingement plate defining a post impingement cavity in said at least one inner shroud; and a resilient seal located between said trailing edge axially projecting hook portion of said at least one inner shroud and said outer shroud, wherein a seal groove is defined in one of said inner and outer shrouds and opens radially to face the other of the inner and outer shrouds adjacent the trailing edge, said resilient seal being disposed in said seal groove, thereby to seal a trailing edge of said post impingement cavity defined in part by a radially outer surface of said inner shroud.