Security seals are locking mechanisms used to seal various containers in a way that provides tamper evidence and some level of security.

Such seals can help to detect theft or contamination, either accidental or deliberate.

Security seals are commonly used to secure truck trailers, vessel containers, chemical drums, airline duty-free trolleys and utility meters and are used in a wide variety of other applications.

Typically they are considered an inexpensive way of providing tamper evidence of intrusion into sensitive spaces.