In logistics, precision is everything. Choosing the wrong security seal length can lead to vulnerabilities, allowing for prying tools to gain leverage or causing the seal to rattle and fail. Our guide covers the technical metrics from 100mm to 700mm.
The Metrics of Security
Security seals are measured primarily by their "Usable Length"—the actual working circumference of the strap once locked. Selecting the right size ensures a flush fit against the locking hasp.
| Length (mm) | Category | Common Application |
|---|---|---|
| 100mm - 200mm | Short | Totes, Car Keys, Small distribution boxes |
| 250mm - 400mm | Standard | Box truck doors, Tanker valves, Toolboxes |
| 500mm - 700mm | Long | Shipping containers, Car carrier trailers |
Why Length Matters
Industrial Application Guide
At Seals Shipping, we use these metrics to determine the security profile of every vehicle transport route.
Recommended Lengths by Use Case
Expert Tip
Conclusion
Technical precision in hardware selection is what separates amateur logistics from professional asset protection. Ensure your shipment is "sized" for security.
FAQs About Auto Transport
The length determines application compatibility. Short seals (100-200mm) are for small latches, while long seals (500-700mm) are essential for securing multi-point container doors.
100mm seals are ideal for small items like car key pouches, document bags, or small distribution boxes where space is limited.
700mm straps are required for heavy-duty applications like securing whole car carrier trailers or maritime containers where a large circumference is needed.
No, the breaking strength depends on the material (metal vs plastic) and core thickness, not the length of the strap.
Yes, at Seals Shipping, we provide custom serialization and barcodes for all seal lengths from 100mm to 700mm.






