Definitions #
A security device attached to a container door that shows whether the cargo has been tampered with during transit.
Technical A one-time locking device fixed to a container's door hasp, with a unique identification number recorded on shipping documents to verify integrity.
Example The customs officer inspected the container seal number against the entry summary.
Etymology #
Container is from Latin continere (to hold together) + seal from Old English seolh, referring to a stamp or closure for security.
Collocations #
- high-security seal 高安全性能封条，防盗设计
- seal number 封条编号，用于提单和报关
Real Business Examples #
- The carrier noted the container seal number on the bill of lading.
Register & Variants #
- Register: formal
- BrE/AmE: global
Synonyms & Antonyms #
- Synonyms: shipping seal, cargo seal
Common Errors #
- Using the seal for more than one shipment Seals are single-use and must be destroyed after opening; reusing them compromises security.
- Assuming a broken seal always means theft It may be due to inspection by customs or an audit, so always check records and report discrepancies.
Confusable Terms #
- padlock vs Container Seal
- Padlocks are general purpose and can be reused, while container seals are single-use and provide evidence of tampering.
Frequently Asked Questions
Who provides the container seal??
Typically the carrier or container owner provides the seal, but shippers can also apply their own if specified in the contract.
How do I verify a seal number??
Compare the seal number on the B/L, the container's seal record, and the physical seal at delivery.
What if the seal is missing??
Refuse to accept the container until the carrier resolves the discrepancy; note it on the delivery receipt immediately.
Published: 2026-09-26 Category: Shipping