Abstract: A molded one piece thermoplastic seal comprises a tab, a socket depending from the tab, a pair of links extending from the tab and a locking member secured to the other end of the links. A tether is secured at opposite ends to the locking member with one of the tether ends weakened. The locking member comprises a pair of resiliently secured tangs attached to a cross-member in which there are a pair of opposing grooves and a transverse hole for receiving the tether. The recesses and hole are inserted within the cavity of the socket with the tether free end inserted so as to lock the tether within the recesses and hole. The tether includes a plurality of projections, one projecting from the tether on each side of the locking member so that when the tether is locked to the locking member in the socket the tether cannot be removed. In a further embodiment, two locking members each having a pair of locking tangs are attached to a strap in tandem.

Abstract: A one piece molded thermoplastic, preferably polypropylene, high security seal for coin bags has a locking socket body from which a flag extends on one side and a rectangular flat elongated shackle extends on the opposite side via an intermediate flat member which has a tear band there across for selectively separating the member into two pieces to facilitate removal of the locked seal. The shackle has several locking circular segment teeth in two parallel linear arrays on opposite edges of the shackle adjacent to a tamper resistant flange at the member end. A locking sheet metal stamped insert has two sets of tangs defining two spaced tooth receiving openings in a socket locking cavity aligned with shackle receiving openings in the body. The body receives the insert transverse to the shackle insertion direction through a cavity side wall later sealed with a flap formed in the seal body. The locked shackle precludes removal of the insert should the side wall seal be tampered with.

Abstract: A security seal has an elongated flexible strap integral with a housing at one end. The other end of the strap can be moved through a passageway in the housing to form the strap into a closed loop. Facilities in the housing and on one surface of the strap permit movement of the strap out of the passageway and prevent reverse movement of the strap if the strap is properly inserted without a half-twist and into the proper end of the passageway. These facilities are ineffective to prevent reverse movement if the strap is improperly inserted. The seal is improved by forming a groove longitudinally in the passageway. A surface feature on the other surface of the strap is conformally received in the groove when the strap is properly inserted into the passageway without twisting. If the strap is improperly inserted, the passageway interferes with and applies force to the surface feature. This force discolors or deforms the surface feature to provide a visual indication of improper insertion.