The cup wire security seals consist of three sheet metal stampings. Two of the stampings are fastened together to form the bottom of the seal that is composed of the shell and crown. The third stamping forms a solid top piece. The seal is installed by threading the wire through the item to be sealed and then through the holes in the seal bottom. Fasten the two wire ends together with a crimp type sleeve or other device. The top is snapped into the bottom, thereby capturing the wire juncture within the metal cup enclosure. The cup wire seal may be ordered in three sizes. Fingerprinting techniques and verification procedures were developed for this seal by Brookhaven National Laboratory. Covert defeat of the cup wire seal, whether it is. Fingerprinted or not, will take a minimum of 30 seconds. It will require the use of special tools as well as substitution of the wire and sleeve.