A metal security seal is a device used to secure containers, trailers, and other types of cargo to prevent tampering or theft during transportation. These seals are made from durable materials such as stainless steel or aluminum and feature a unique serial number for identification and tracking purposes. They are commonly used in industries such as shipping, logistics, and pharmaceuticals to ensure the integrity and safety of goods being transported. Metal security seals can be applied and removed using specialized tools, and any tampering or breach of the seal can be easily detected. They are an effective and reliable way to secure cargo and ensure the safety and security of goods in transit.