Seal with replaceable lip

摘要

In described embodiments, a seal assembly is provided for sealing a space between a shaft and a housing. The shaft is rotatable about a central axis. The seal assembly includes an outer portion connectable with the housing and an inner portion releasably attached to the outer portion. The inner portion is replaceable with a replacement inner portion. A method for removing the inner portion from the outer portion is also provided.

主权项

1. A seal and shaft assembly, the seal disposed around the shaft, the seal and shaft assembly comprising:
the shaft; the seal comprising:
an outer portion having:
an axial portion, the axial portion having a first end and a second end; anda radial portion extending radially inwardly, the radial portion having:
a connected end extending radially from the first end of the axial portion;a free end located distal from the connected end; anda radial axis extending along a portion of the radial portion;an inner portion having:
a sealing portion engaging the shaft;a dirt lip engaging the shaft;a groove formed between the sealing portion and the dirt lip, the groove sized such that the free end is releasably insertable therein, wherein the inner portion is slidable along the radial axis and replaceable with a replacement seal;andan annular ring engaging the dirt lip and the sealing portion such that a gap is formed between the annular ring and the inner portion between the dirt lip and the sealing portion wherein the annular ring is out of contact with the inner portion and such that the annular ring retains the inner portion onto the outer portion, the annular ring having an axis axially aligned with the radial axis.