Patent ID: 8950753
Filing Date: 2015-02-10
Classification: F16J

Abstract:
1. A radial shaft seal configured for receipt in a housing and about a shaft to sealingly isolate an air side of the shaft seal from an oil side of the shaft seal, comprising: an annular mounting portion; a seal lip having an annular sealing surface extending between an oil side end and a free air side end, said sealing surface being configured to extend axially relative to the shaft; an annular bridge connected to said oil side end of said seal lip by a first hinge and to said mounting portion by a second hinge, said bridge extending from said first hinge to said second hinge in radially overlying relation to said seal lip; at least one projection extending from said first hinge away from said bridge toward said oil side of said seal, said at least one projection having a radially outwardly facing outer surface and a radially inwardly facing inner surface; a plurality of circumferentially spaced ribs extending radially inwardly from said inner surface; and a plurality of circumferentially spaced nubs extending axially from said oil side end of said seal lip toward the oil side of the shaft seal.