Sealing unit for rotating shaft

摘要

A sealing unit for sealing an opening through which a rotating part passes. A rotary ring turns within a housing when a pair of flexible rings carried by the rotary ring are turned by engagement with a rotating part. The opposed faces of the rotary rings are in sliding contact with surfaces having mineral filled low friction layers. The sliding contact between the rotary ring and the surfaces having mineral filled low friction layers is established and maintain by a spring.