Conveyor roller and bearing seal

Claim 1

In combination, a roller comprising a rim, a hub having a central bore therein, said hub extending through and projecting beyond the ends of the rim, a bearing assembly rotatably mounting the rim on the hub with a clearance space therebetween, and means sealing said space on opposite sides of the rim, said sealing means each comprising a disc of elastomeric material having an opening of a diameter less than the outer diameters of the ends of the hub, a flexible annular lip having a greater diameter than the hub extending laterally from the periphery of the disc, at least three fingers extending from the wall of the disc in the same direction as the lip and being of a shorter length than the lip but of a length to extend along the projecting end of the hub and bear against the rim when the disc wall lies against the end of the hub, said fingers being equiangularly spaced concentrically about the axis of the bore on a radius slightly smaller than the outer periphery of the hub for gripping the hub when flexed outwardly, said fingers each being a short arc of elastomeric material with the concavity toward the axis and of a circumferential extent less than the spacing between adjacent fingers.