Sealing Lip and Seal Assembly for Track Pin Joint Assemblies

摘要

A seal assembly for use in sealing a joint having a first member pivotable about a rotational axis relative to a second member. The seal assembly may include a load ring engaged by the first member, a sealing lip engaging a sealing surface of the second member, and seal ring there between. The sealing lip may have a sealing lip body with a first convex rounded engagement portion of a second member engagement surface positioned to engage the sealing surface when the seal assembly is assembled in the axially-extending seal cavity between the first member and the second member. The second member engagement surface may include additional convex engagement portions, and the sealing lip may include a sealing lip flange extending radially outwardly from the sealing lip body and disposed proximate the sealing surface after assembly.

主权项

1. A seal assembly for use in sealing a joint having a first member pivotable about a rotational axis relative to a second member thereof, the first member including a first load ring engagement surface defining an axially-extending seal cavity about the rotational axis, and the second member including a sealing surface, the seal assembly comprising:
a load ring having a first member engagement surface that is complimentary to the first load ring engagement surface, and a seal ring engagement surface; a seal ring having an axial flange extending parallel to the rotational axis, a radial flange extending perpendicular to the rotational axis, a second load ring engagement surface, and a concave groove in the radial flange; and a sealing lip having a sealing lip body with a convex seal ring engagement surface with a complimentary shape to the concave groove for receipt therein, and a second member engagement surface having a first convex rounded engagement portion positioned to engage the sealing surface of the second member when the seal assembly is assembled in the axially-extending seal cavity between the first member and the second member.