Patent ID: 8056904
Filing Date: 2011-11-15
Classification: F16J

Abstract:
1. A hydrodynamic rotary seal for location by a machine component for dynamic sealing engagement with a relatively rotatable surface and for serving as a partition between a first fluid of a lubricant supply and a second fluid, the hydrodynamic rotary seal comprising: a static sealing surface adapted to form a sealing interface with the machine component; a generally circumferential dynamic lip, at least a portion of said dynamic lip adapted to be maintained in contacting relation with the relatively rotatable surface to define an interfacial contact footprint between said dynamic lip and the relatively rotatable surface, wherein during relative rotation between said dynamic lip and the relatively rotatable surface while in use, said interfacial contact footprint is a dynamic sealing interface with sliding occurring between said dynamic lip and the relatively rotatable surface, and in the absence of relative rotation, said interfacial contact footprint is a static sealing interface; said dynamic lip comprising: