| 主权项 |
1. A unitized radial fluid seal including:
a shell comprising an at least substantially cylindrical, axially-extending first flange and a second flange extending at least substantially radially from the axially-extending first flange, a first elastomeric seal body affixed to the shell and comprising a radially-extending primary seal lip, a sleeve comprising an at least substantially cylindrical, axially-extending sealing flange having a terminal end radially inward of the shell second flange and a protective flange extending at least substantially radially from the axially-extending sealing flange, a spring radially urging the primary seal lip into sealing contact with a sealing surface of the axially-extending sealing flange, and a second elastomeric seal body affixed to the sleeve, the second elastomeric seal body having an at least substantially cylindrical portion overlying a radially inner side of the sleeve and a resiliently-elastic angled lip connected to and extending axially inwardly from the terminal end of the axially-extending sealing flange, wherein the angled lip has:
a first conical surface facing axially and radially outwardly, anda second conical surface facing axially inwardly and radially outwardly, the second conical surface extending to and terminating at a first lip peak that points axially inward, a second lip peak axially between the first surface and the second surface, the second lip peak being located axially between the terminal end of the axially-extending sealing flange and the first lip peak and radially outward of the first lip peak, a first angle (α) defined by the sealing surface and at least a segment of the first surface is between 130-170° and the primary seal lip is axially retained between the angled lip and the radially-extending protective flange. |
