Patent ID: 7681888
Filing Date: 2010-03-23
Classification: B62D,F16J

Abstract:
1. A multi-piece fluid seal assembly for use with a rotary shaft of a power steering mechanism comprising; a first piece of said seal assembly forming a portion of a pressurized fluid-containing housing, said first piece including a high-pressure seal comprising: a metal snap ring for retaining said annular seal casing in said fluid-containing housing, said metal snap ring contacting an outer surface of said radial flange near a point where said radial flange meets said axial flange; an elastomeric axially extending wiper lip, bonded to said axially offset radial flange; an elastomeric radial dust lip, bonded to said axially offset radial flange and being radially innermost from said elastomeric axially extending wiper lip; and a second piece of said multi-piece seal assembly comprising: wherein a space formed by an axially extending inner bore surface of said housing, air side surfaces of said radial flange and of said axially offset radial flange of said seal casing, an inner oil side facing surface of said radially extending stiffener flange and said axially extending wiper lip, contains grease.