Patent ID: 7753377

Claim:
A shaft seal comprising: an annular inner case having an axially extending leg and a radially extending leg extending radially inwardly from an end of said axially extending leg; an inner annular insert positioned radially inside of and directly abutting said axially extending leg of said inner case; an elastomeric annular body overmolded to said inner case and including a radially inwardly protruding annular lip, an axially extending annular bead and at least one radially outwardly extending annular bead; an annular backup/support insert received in an annular pocket in a radially outer surface of said elastomeric annular body; an annular outer case having an axially extending leg disposed against said at least one radially outwardly extending annular bead of said elastomeric annular body and a radially inwardly extending leg disposed against said axially extending annular bead of said elastomeric annular body; and a radially extending backup washer having a planar surface disposed directly against a free end of said axially extending leg of said outer case and directly against said inner annular insert, said backup washer having a radially inner end and an opposite radially outer end, wherein said planar surface extends along an entire length of said back-up washer from said radially inner end to said radially outer end.