Container seals, named also as barrier seals, are specially designed for applications such as security sealing shipping containers and box trailers. This security seals meet the security standard ISO 17712 barrier security seals and they are classified as High Security Seals. Their main characteristic is the high degree of solidity and high grade locking and safety.
The purpose of container seals is to determine whether a freight container has been tampered with, i.e. whether there has been unauthorized entry into the container through its doors. The seals are meant to stay on through to the container’s final destination and is removed by the consignee. They can either be as type of bolt seal or a cable seal. For an increasing level of security the container seal has its own unique number, printed on the body and on the head of the bolt seal, as identification that is listed on the shipping paperwork.
Container seals that conform to ISO 17712 are suitable for other applications, such as bulk rail cars or truck trailers used in cross-border and domestic operations. Because of their high strength of protection they are often called barrier seals.
The most preferred type of security seal for carriers is the high security Bolt Seal container security seals that meets the criteria of ISO PAS 17712. Bolt seals are used in high security applications. They consist of a two-part system: a bolt or shaft and a locking device. One half is designed to snap irreversibly into the other half through the hasp. They offer both a high strength barrier and indicator against intrusion. These barrier seals are popular for use on trucks and transport containers. Bolt seals can usually withstand substantial force without opening.
Security seals for sea containers, rail cars, trailers, and long-haul trucks, may come in many shapes and forms from embossed lead wire seals to plastic and metal strip seals, to plastic and metal bullet seals, to metallic padlocks seals, all of which have been used by customers to safeguard the cargo in transit that is shipped in containers.