According to one aspect of the invention, an assembly to be placed between adjacent turbomachinery components is provided, where the assembly includes a first shim comprising a U-shaped cross-section geometry, wherein the first shim is configured to form a seal between adjacent components. The assembly also includes an insert placed within a recess of the U-shaped cross-section geometry of the first shim and a plurality of staggered couplings between the insert and the first shim.
FEDERAL RESEARCH STATEMENT
 This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the US Department of Energy (DOE). The Government has certain rights in this invention.