Assembly including face seal sized to interference fit in housing

摘要

A track assembly for a tracked vehicle includes a wheel, a shaft, a track, a retainer and at least two opposing face seals. The wheel includes a hub, the hub defining a hole and a bore, the hole extending through the wheel and the bore being disposed at one end of the hole. The shaft is disposed in the hole, whereby the wheel is rotatably supported by the shaft. The track is supported by the wheel. A retainer is disposed in opposite relation relative to the bore, the retainer defining a cavity. The at least two opposed face seals are disposed in a space defined by the retainer and the hub of the wheel, with each face seal including a flexible supporting ring and a rigid sealing ring, the supporting ring having opposed left and right surfaces defining opposed inner and outer surfaces in a radially spaced relationship, the outer surface being substantially smooth from the left to the right surfaces and defining a diameter of the flexible ring, and the diameter of each supporting ring being larger than one of the bore and the cavity. The outer surface of each supporting ring abuts at least one of (i) a surface of the wheel defining the bore and (ii) a surface defining the cavity of the retainer.