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ISO 17712 High Security Seals for Containers
ISO 17712 High Security seals are specified where certified tamper resistance and auditable seal integrity are required for secure and customs-controlled movements. Tested to meet the ISO 17712 “H” classification, these seals provide high levels of resistance to tampering and are subject to ongoing certification and re-testing. Options include bolt (barrier), cable and fork seals to suit different enclosures, locking points and cargo types. Common applications include shipping containers and international freight movements where inspection and compliance are critical.
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ISO 17712 “H” high security classification
ISO 17712 High Security seals are tested against the standard’s performance requirements and are commonly specified for customs-controlled and higher-risk freight movements. The “H” classification indicates a high-security seal type designed for strong resistance to tampering and forced entry, supporting inspection and auditable seal integrity at handover points.
Bolt (barrier) vs cable vs fork seals
Bolt seals are typically used on shipping container doors and locking bars where a rigid, high-security seal is required. High-security cable seals suit sealing points where flexibility is needed around latches, irregular closures or multiple locking points. Fork seals are a heavier-duty option designed to enclose more of the space around the container’s vertical locking bars, making tamper attempts more visible and significantly harder to reinstate once disturbed. The correct choice is usually driven by the sealing point and operating procedure rather than the cargo alone.