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HYDRODYNAMIC ROTARY SEAL WITH OPPOSED TAPERING SEAL LIPS
HYDRODYNAMIC ROTARY SEAL WITH OPPOSED TAPERING SEAL LIPS
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机译:锥形锥形唇的液压旋转密封
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摘要
A hydrodynamically lubricating rotary seal for partitioning a lubricant from an environment has a generally circular seal body and sloping, generally opposed projecting static and dynamic lips. The dynamic sealing lip is provided for establishing compressed sealing relation with a relatively rotatable surface, and has a sloping dynamic sealing surface that varies in width, and also has a hydrodynamic inlet curvature that varies in position around the circumference of the seal. When the seal is installed against a relatively rotatable surface, the dynamic sealing lip deforms to define a variable width interfacial contact footprint against the relatively rotatable surface that is wavy on the lubricant side, and wedges a film of lubricating fluid into the interface in response to relative rotation. The environment edge of the interfacial contact footprint is substantially circular, and therefore does not produce a hydrodynamic wedging action in response to relative rotation.
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