Patent ID: 7287956

Claim:
A turbine comprising: a stationary component and a rotary component, said stationary component including a diaphragm having an annular array of stator vanes about the turbine axis, said diaphragm having a groove, including a seal carrier removably and slidably received in a circumferential direction in said groove, said seal carrier having a first seal face in opposition to seal teeth carried by said rotary component, said first seal face being formed of an abradable material layer applied over said seal carrier enabling said rotary component to abrade material from said first seal face when sealing between said rotary and stationary components, and a second seal face carried by said seal carrier along a generally axially facing surface of said seal carrier and in opposition to a seal surface carried by said diaphragm, said seal carrier being movable generally axially to form a seal between said seal surface and said second seal face, wherein said second seal face carries an abradable material enabling said seal surface to abrade said material when sealing between said seal carrier and said diaphragm.