Abstract: A sealing ring for computer tape reels and the like wherein the sealing ring comprises a molded unitary strip of homogeneous plastics material adapted to be formed into a loop to sealingly encircle the reel. The strip has a live transverse hinge adjacent one strip end defining a latch portion between the hinge and that end, and a transverse seating surface is provided on the radially inner side of the strip adjacent the hinge. In use, the strip is wrapped around the reel, the transverse end surface of the other end of the strip, remote from the latch portion, is abutted against the transverse seating surface to dispose the latch portion in overlapping relation to the other strip end, and the latch portion is pivoted inwardly about the hinge axes to latchingly interengage latching elements defined on the radially inner surface of the latch portion and on the overlapped portion of the other strip end.