FIG. 1 is a perspective view of the embodiment of our design for a ring seal;
FIG. 2 is a front view of the design for the ring seal shown in FIG. 1;
FIG. 3 is a rear view of the design for the ring seal shown in FIG. 1;
FIG. 4 is a left side view of the design for the ring seal shown in FIG. 1, the right side view being identical thereto; and,
FIG. 5 is a top view of the design for the ring seal shown in FIG. 1, the bottom view being identical thereto.
The broken lines in FIGS. 1-5 are in no way intended to form part of the claimed design and are for illustrative purposes only.