Patent ID: 6910858

Claim:
A turbine engine comprising: a support structure having a first axis; a rotor shaft having a rotor axis and rotatably carried by the support structure; a seal having: a seal axis, the seal being carried by the support structure circumscribing the shaft so as to permit radial excursions of the seal axis from the first axis; a brushpack in contact with the rotor shaft and having first and second sides; at least a first plate on the first side of the brushpack and having a first radial clearance from the rotor shaft when said seal axis and rotor axis coincide; and a rubplate element on one of said first and second sides of the brushpack and having a rubplate radial clearance from the rotor shaft that is less than the first radial clearance when said seal axis and rotor axis coincide, the rubplate having a metallic portion softer than an adjacent portion of the rotor shaft; and a spring biasing the seal toward a coaxial relation with the support structure.