Patent ID: 8740224

Claim:
A seal assembly for a turbomachine comprising: a seal ring rotatable between a first position and a second position, and having a plurality of tunnels; a back ring located adjacent the seal ring and having a plurality of apertures that align with more of the plurality of tunnels of the seal ring when at the second position than when at the first position; and a retention piece operably connecting the seal ring and the back ring, wherein the back ring is coupled to the retention piece via an anti-rotation component, the seal ring is coupled to the retention piece via a connection that allows the seal ring to rotate from the first position to the second position, the anti-rotation component including a securing pin, the securing pin operably coupling the back ring to the retention piece, the connection between the seal ring and the retention piece including a breakable slot the securing pin, the securing pin coupling the seal ring to the retention piece at the first position under normal operation.