Track pin assemblies and seals therefor

Details Track pin assemblies and seals therefor Track pin assemblies and seals therefor

B - Operations, Transporting

62

D

305/63

B62D 55/08 (2006.01) B62D 55/088 (2006.01) F16J 15/34 (2006.01)

Patent

CA 1064553

ABSTRACT OF THE DISCLOSURE An end face seal especially adapted for use in severe service environments such as for sealing track pins of crawler type tractors. The seal includes a primary annular seal, having a radially extending flange portion for contacting a mating surface in face sealing engagement and an axially extending flange portion, and a secondary annular sealing member positioned in use about the axial flange portion. The cross section of the secondary annular sealing member is generally parallelogram- shaped in an unstressed condition. The secondary member is made from a relatively soft rubber and the primary seal ring is made from a relatively hard rubber. In use, the inner diameter of the primary ring is engaged and supported by a portion of the sealed mechanism so as to resist collapsing on the application of strong radial compressive loads.

279519

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