Container Bolt Seals

Container bolt seals serve two purposes in international logistics: they provide visible evidence of unauthorized access and they support customs verification throughout the transport chain.

For importers, freight forwarders and customs-controlled shipments, using non-compliant seals can lead to additional inspections, shipment delays, or rejection by customs authorities. Our high-security bolt seals are manufactured to meet ISO 17712:2013 High Security requirements and are suitable for international container movements requiring C-TPAT compatible security procedures.

During customs inspections, officers typically verify both seal integrity and serial number consistency against shipping documentation.
To support this process, each bolt seal can be marked with matching identification on both the steel pin and locking body.
Available marking options include:
Sequential serial numbers
Company names and logos
Barcode 128
QR codes
Data Matrix identification
Laser engraving permanently alters the material surface rather than relying on labels or ink printing, helping maintain legibility throughout long-distance transport and outdoor storage.
Serialization can be managed according to customer-specific numbering rules for easier reconciliation with shipment records and internal audit systems.

Container theft often targets the weakest point in the transport chain. Security seals are expected not only to indicate unauthorized access but also to discourage rapid removal attempts.
Heat-Treated Steel Components
The locking pin and barrel use heat-treated steel components designed to improve resistance against cutting and leverage attacks compared with indicative plastic seals.
Rotational Resistance Design
The internal locking mechanism is engineered to reduce the effectiveness of rotational tampering attempts using gripping or spinning tools.
Permanent Single-Use Construction
Once engaged, the locking mechanism cannot be opened without visible damage to the seal body, providing clear evidence of interference during custody transfers.

International cargo movements expose security seals to salt spray, humidity, ultraviolet radiation and significant temperature variations.
To improve environmental durability, the steel components receive corrosion-resistant surface treatment while the ABS outer layer helps protect markings and improves handling safety during installation and removal.
This construction helps maintain seal readability and locking performance throughout extended transportation cycles.

We supply container bolt seals to security seal distributors, freight companies, customs brokers and procurement contractors worldwide.
Available customization services include:
Company logo engraving
Customer-specific numbering sequences
Barcode and QR coding
Custom colors
Sequential packaging arrangements
Private label packaging
Production planning and serialization management are controlled through ERP-based manufacturing systems to support traceability across multiple production batches.

Our high-security bolt seals are widely used for:

They are particularly suitable where chain-of-custody records and customs compliance requirements form part of normal operating procedures.

Security seals are often subject to customer approval procedures before large-volume purchasing decisions are made.
Sample units are available for operational testing, internal validation and compatibility checks with existing transport procedures.
Technical teams can also provide supporting documentation including:
ISO 17712 certification reports
Product specifications
Material information
Customization guidance
Packaging details
For distributor programs or project quotations, our engineering and export teams are available to discuss technical requirements and production schedules.