Abstract: A clearance seal for rotating shafts adapted for use with pillow blocks and the like, in which a series of washers is disposed in a housing of U-shaped cross sectional configuration. The washers are of thin metal and are stacked in face-to-face contact with one another and held in the housing in firm contact by a resilient member such as a wave spring washer. Clearance is provided between the inside diameter of the sealing washers and an inner race, shaft or similar rotating element, and the washers are adapted to move radially relative to one another to adjust to shaft misalignment. The seal is so constructed and arranged that the bearing can be readily purged by the flow of grease through the clearance provided by the seal to provide optimum performance over an extended period of time without interference from contamination.