A connection joint comprising: a pin coupled to a first component, the pin defining a central axis; a bushing coupled to the pin and defining a center of rotation; a second component; a seal assembly for sealing between the first component and the second component, the seal assembly including: an inner surface coupled to the first component; an outer surface coupled to the second component; a seal body extending between the inner surface and the outer surface, the seal body including a body inner section extending outwardly from the inner surface, a body outer section extending inwardly from the outer surface, and a body center section extending between the body inner section and the body outer section, the seal body defining a generally S-shaped cross-section; the seal body defining a height H equal to a radial distance between the inner surface and the outer surface; the body center section defining a centroid C substantially located at a geometric center point of the body center section, the centroid C being disposed along a angular reference line L that intersects the central axis of the pin, the angular reference line L being disposed at an angle α with respect to the central axis of the pin; and the centroid C further being located at a radial distance Y from the central axis of the pin; wherein the angle α is 51 to 61 degrees and a height-to-radial distance ratio H/Y is 0.4. a pin coupled to a first component, the pin defining a central axis; a bushing coupled to the pin and defining a center of rotation; a second component; a seal assembly for sealing between the first component and the second component, the seal assembly including: an inner surface coupled to the first component; an outer surface coupled to the second component; a seal body extending between the inner surface and the outer surface, the seal body including a body inner section extending outwardly from the inner surface, a body outer section extending inwardly from the outer surface, and a body center section extending between the body inner section and the body outer section, the seal body defining a generally S-shaped cross-section; the seal body defining a height H equal to a radial distance between the inner surface and the outer surface; the body center section defining a centroid C substantially located at a geometric center point of the body center section, the centroid C being disposed along a angular reference line L that intersects the central axis of the pin, the angular reference line L being disposed at an angle α with respect to the central axis of the pin; and the centroid C further being located at a radial distance Y from the central axis of the pin; wherein the angle α is 51 to 61 degrees and a height-to-radial distance ratio H/Y is 0.4. an inner surface coupled to the first component; an outer surface coupled to the second component; a seal body extending between the inner surface and the outer surface, the seal body including a body inner section extending outwardly from the inner surface, a body outer section extending inwardly from the outer surface, and a body center section extending between the body inner section and the body outer section, the seal body defining a generally S-shaped cross-section; the seal body defining a height H equal to a radial distance between the inner surface and the outer surface; the body center section defining a centroid C substantially located at a geometric center point of the body center section, the centroid C being disposed along a angular reference line L that intersects the central axis of the pin, the angular reference line L being disposed at an angle α with respect to the central axis of the pin; and the centroid C further being located at a radial distance Y from the central axis of the pin; wherein the angle α is 51 to 61 degrees and a height-to-radial distance ratio H/Y is 0.4.