Ball Metal Tag Seals - plain top Thin slotted metal seal has ball end for secure fit. Ball end contains double-locking ring closure for 136 lbs pull strength. Tin-plated steel bands are tough to break, yet flat to fit into thin slots. These corrosion-resistant seals are 8 7/16" x 3/8". Identification is embossed along the length. Stock seals have wording SECURED and random start sequential numbering.