Furrowed O-ring

FIG. 1 is a top isometric view of a furrowed O-ring of my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a top isometric view of the furrowed O-ring with optional additional furrows of my new design; and,

FIG. 4 is a top plan view thereof.

The broken lines in the drawings depict portions of the furrowed O-ring that form no part of the claimed design.

Views of the furrowed O-ring that are not shown in the drawings or described herein form no part of the claimed design.