Patent ID: 6896269

Claim:
A seal for a hydraulic cylinder rod, comprising: a main body defining an opening therein and including an inner surface, an outer surface, a first radial face having a generally planar surface extending from the inner surface to the outer surface, a second radial face extending from the inner surface to the outer surface and having a groove disposed therein, the groove defining an inner lip adjacent the inner surface and an outer lip adjacent the outer surface; and a plurality of relief features disposed in the outer surface of the main body, each of the plurality of relief features including a channel formed in the outer surface and extending from the first radial face to a recess having a width larger than a width of the channel and being disposed in the outer lip of the main body, wherein a ridge separates the recess from the second radial face, the recess of each of the plurality of relief features is adapted to receive a pressurized fluid from the first radial face through the channel, and the outer lip of the main body is adapted to flex to allow a flow of pressurized fluid from the first radial face to the second radial face when the pressure of the fluid at the first radial face is greater than the pressure of a fluid at the second radial face.