The high-security steel inner core is completely encapsulated in a tough, tamper-evident and numbered polymer shell. Steel and heavy-duty in vitro, high-security bolt seals are used for Intermodal Containers, Wagons, Truck, Doors, Railroad Cars, Hatches, Air Cargo Containers Hazmat Containers, and Tankers. Single use bolt locks provide a high level of security and tamper-evidence. The Bolt-Seal is laser engraved with matching serial numbers on the pin and cap. An updated printing location allows visibility of both numbers after installation. Having each component marked with matching serial numbers eliminates the possibility of component replacement and increased tamper resistance.