Abstract: A narrow cross section (about 0.110 inch) grease purgeable bushing seal that can be installed in the same housing bore diameter as that of the bushing without the need for machining a larger counter bore in the housing, including a metal shell with a radially inwardly turned flange at the bushing side thereof, and an elastomeric sealing element molded and bonded to the shell. To be grease purgeable, the seal parameters must be within the following ranges for the cross-sectional thickness E, the lip clearance A, the lip thickness B, the lip beam length C, the orifice D and the interference i, as follows:E.ltoreq.0.100 inch+iI=0.000 to 0.015 inchA.gtoreq.bB.gtoreq.23% (e-iC.gtoreq.45% (e-i)D.gtoreq.31% (e-i)The seal can also be turned around and used to seal oil in other applications thereof.

Abstract: A unitized thrust bearing is held within an interlocking seal assembly including outer and inner seal elements each having a radial portion and a cylindrical portion at the outer end of the radial portion, with the cylindrical portions extending toward each other. The outer cylindrical portion is metal and includes a radially inwardly extending locking member at the distal end thereof and the inner cylindrical portion has a radially outwardly extending O.D. sealing lip. The locking member and sealing lip provide an interference fit therebetween and must snap past one another to lock the seal elements together and unitize the thrust bearing. The radial portions of each of the seal elements includes an I.D. shaft sealing lip molded thereto.