Double sided outer seal

A machine comprising:

• a pivot joint comprising a first member with a chamfered face and a second member comprising a chamfered face, wherein one of the first member and the second member rotates with respect to the other and are separated from each other by a gap;
• and
• a seal comprising an uninstalled state and an installed state when positioned partially in the gap to seal the gap from external debris, the seal comprising,
• a substantially solid body with bilateral symmetry extending around a longitudinal axis, the substantially solid body comprising
• a first sealing lip extending outward on a right side of the substantially solid body comprising an upper surface at a positive angle with respect to the longitudinal axis and a first sealing surface opposite the upper surface at a positive angle with respect to the longitudinal axis, wherein the upper surface and the first sealing surface are oriented away from the longitudinal axis in the uninstalled state,
• a second sealing lip on the right side of the substantially solid body positioned radially below and axially inward with respect to the first sealing lip, the second sealing lip comprising a top surface and a second sealing face at a positive angle with respect to the longitudinal axis, wherein in an installed position the first sealing lip is flexed away from the second sealing lip,
• a gap extending into the substantially solid body between the first sealing lip and the second sealing lip formed by the bottom surface of the first sealing lip and the top surface of the second sealing lip:
• a third sealing lip on a left side of the substantially solid body, and
• a fourth sealing lip on the left side of the substantially solid body positioned radially below and axially inward with respect to the third sealing lip, wherein in the installed position the third sealing lip is flexed away from the fourth sealing lip.