Plastic aeal is a lightweight, single-use tamper-evident security device commonly used for securing non-hazardous cargo containers, truck doors, courier bags, and meter boxes. Made from high-strength polypropylene or nylon, it typically consists of a flexible strip with a locking mechanism that clicks irreversibly into place. Once sealed, any attempt to cut, pull, or twist the seal leaves visible damage, indicating unauthorized access. Plastic seals are cost-effective, easy to apply, and come with unique serial numbers and barcodes for tracking. While offering lower tensile strength compared to metal seals, they are ideal for low-risk shipments requiring basic security and customs compliance.