Scavenger Pump Seal and Radial Shaft Seal Assembly Therewith

摘要

A scavenger pump seal and radial shaft seal assembly therewith are provided. The scavenger pump seal includes an inner case configured for fixed attachment to a shaft for conjoint rotation with the shaft and an outer case configured for fixed receipt in a housing in which the shaft rotates. The inner case has an innermost wall sized for a press fit on the shaft and an outermost wall. An absorbent member is fixed to the inner case with the outermost wall overlying the absorbent member, thereby preventing the absorbent member from moving radially outwardly. The outer case has an outermost wall sized for fixed receipt in the housing, and facilitates preventing the egress of oil to the external environment.

主权项

1. A radial shaft seal assembly, comprising:
a radial shaft seal having an outer case, a seal body attached to said outer case, and a seal lip extending radially inwardly from said seal body to form a seal between an air-side of said radial shaft seal and an oil-side of said radial shaft seal; and a scavenger pump seal having an inner case configured for fixed attachment to a shaft for conjoint rotation with the shaft and an outer case configured for fixed receipt in a housing in which the shaft rotates, said inner case having an innermost wall sized for a press fit on the shaft and an outermost wall, with an absorbent member fixed to said inner case on the air-side of said radial shaft seal with said outermost wall overlying said absorbent member to prevent said absorbent member from moving radially outwardly, said outer case having an outermost wall sized for fixed receipt in the housing on an air-side of said absorbent member to prevent oil from escaping to an outside environment.