Container & Shipping Seals |

Container & Shipping Seals for Cargo Security

Container and shipping seals are essential for protecting cargo across every stage of transit. From ports to distribution hubs, high-security container seals help prevent tampering, theft, and unauthorized access.

STiER Security Seals Powered by DoubleLock USA  is an expert manufacturer of shipping container seals. We produce container bolt seals and cable seals that apply as tamper evident seals and also provide increased container security against cargo theft. We offer quality tailor made solutions for competitive prices and we ship worldwide. We can manufacture our bolt and cable locks with your company logo and unique serial number. All of our shipping seals for containers meet ISO 17712 and CTPAT standards. 

Container Bolt Seals are strong locking devices used to seal and secure international cargo containers once a shipment is loaded. Upon placing a container seal, a container has been properly closed at origin. Because it can be removed only once, it ensures that a container remains unopened during the journey to its final destination where it is removed by the consignee. 

These metal seals therefore provide tamper evidence and help to detect cargo theft or contamination. These security seals have a relative high breaking strength and therefore also provide a greater level of security than most other security seals. A container seal has its own unique number as identification and this number is listed on the shipping paperwork. The people receiving the container must check the bill of lading and check whether the seal number matches with the number on the container. 

A container bolt seal used for securing containers must conform to the ISO 17712:2013 high security seal standard in order to be accepted by customs all around the world in ocean shipping. ISO 17712:2013 certified bolt seals comply with CTPAT as well. CTPAT, which stands for Customs Trade Partnership Against Terrorism, was started by U.S. Customs and Border Protection to strengthen international supply chains and improve United States border security. You can find more information about these standards in our article about ISO 17712 security seals 

The best place to put a container seal normally is on the container’s right door, as that door will be opened first. You can place the bolt seal on one or both lock rods of the right door. 

Container bolt seals can be applied without the use of tools. For removing a bolt seal however, a bolt cutter is required. Bolt seals are one time usable tamper evident seals. 

 

High Security Bolt Seals & Bolt Pins

Our bolt seals and bolt pins are engineered to meet strict standards for shipping container security. Manufactured with hardened steel and tamper-evident locking systems, these seals create a strong barrier while providing visible proof of interference. Bolt seals are widely used for intermodal containers, trailers, and freight shipments requiring compliant, high security sealing.

Tamper Evident Seals for Freight & Logistics

Shipping seals support freight security and supply chain visibility. Each seal includes unique identification for tracking and verification, helping logistics teams maintain chain of custody. Container seals and bolt seals are critical for reducing risk across trucking, rail, and ocean freight operations.

Durable Container Seals for Global Shipping

Built to handle harsh environments and long-distance transport, container and shipping seals must perform without failure. STiER Seals Powered by DoubleLock USA provides durable options, including bolt seals, bolt pins, and high security container seals designed for consistent protection and regulatory compliance across global shipping operations.