3.1 Types of mechanical seals

3.1.1 Wire— Wire seals consist of a length of wire secured in a loop by some type of seizing device. Examples of this type are crimp wire, fold wire, and cup wire seals.

3.1.2 Padlock— Padlock seals consist of a locking body with a bail attached. Examples of this type of seal are wire shackle padlock (metal or plastic body), plastic padlock, and keyless padlock seals.

3.1.3 Strap— Strap seals consist of a metal or plastic strap secured in a loop by inserting one end into or through a protected (covered) locking mechanism on the other end.

3.1.4 Cable— Cable seal consist of a cable and a locking mechanism. On a one-piece seal, the locking or seizing mechanism is permanently attached to one end of the cable. A two-piece cable seal has a separate locking mechanism which slips onto the cable or prefabricated cable end.