Patent ID: 6659468
Filing Date: 2003-12-09
Classification: F16J

Abstract:
A rotational assembly including a stationary part, a rotary part mounted to rotate relative to the stationary part about an axis, and a seal attached to the rotary part for rotation therewith, the seal being annular and coaxial with the rotary part and comprising a seal body and a lip attached to the seal body and extending outwards from the seal body, the seal body being attached to the rotary part in a manner that provides a seal between the seal body and the rotary part, and the lip having a stem and a tip and being attached to the seal body in a manner allowing deflection of the lip relative to the seal body, and wherein the tip engages the stationary part of the rotational assembly when the rotary part of the rotational assembly is not rotating or is rotating at a low speed and tends to lift away from the stationary part when the rotary part is rotating at higher speed.