Patent ID: 7134671

Claim:
A seal comprising: a substantially annular body portion; a substantially annular lip portion extending from the body portion, the lip portion having an arcuate segment which exhibits a first radius, a first segment adjoining the arcuate segment of the lip portion on a first side thereof and a second segment adjoining the arcuate segment of the lip portion on a second side thereof; and a substantially annular protrusion formed on the lip portion having an arcuate segment which exhibits a second radius which is less than the first radius, the protrusion further including a first segment adjoining the arcuate segment of the protrusion on a first side thereof and wherein the first segment of the protrusion is also adjacent the arcuate segment of the lip portion, wherein the protrusion is configured to contact a surface of a relatively movable machine element and wherein the first segment of the protrusion is configured to be substantially perpendicular with the surface of the relatively movable machine element upon contact therewith, and wherein the substantially annular protrusion projects in a direction substantially perpendicular to the second segment of the lip portion beyond any surface features of the second segment of the lip portion.