Patent ID: 8079219

Claim:
A combustor seal comprising: a seal support having a plurality of through impingement holes, the seal support disposable at a first combustor component; a wave-shaped seal disposed at the seal support and defining at least one seal cavity between the wave-shaped seal and the seal support, a peak of the wave-shaped seal disposable at a second combustor component, the wave shaped seal including an outer seal layer and an inner seal layer,wherein the outer seal layer is placed over the inner seal layer, each seal layer having a seal ring and a plurality of seal fingers extending in one direction from the seal ring, adjacent seal fingers having a gap therebetween; and at least one through passageway disposed in the wave shaped seal upstream of the peak capable of flowing cooling fluid therethrough into the at least one seal cavity and through the plurality of impingement holes thereby cooling the first combustor component, wherein the gaps of the inner seal layer are circumferentially offset from the gaps of the outer seal layer, and a passageway is formed by overlapping a perimetrical location of each gap of the outer seal layer with a perimetrical location of each gap of the inner seal.