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When protecting cargo, shipping containers, trailers, tankers, and high-value assets, choosing the correct security seal is essential. Two of the most commonly used solutions are cable seals and bolt seals. While both provide visible tamper evidence and improve supply chain security, they are designed for different applications and security requirements.
In this guide, we’ll compare cable seals vs bolt seals, explain where each type performs best, and help you determine the most effective solution for your organisation.
For a full range of tamper-evident security products, visit the Acme Seals Ltd homepage.
Cable seals are tamper-evident security seals manufactured using galvanised steel cable combined with a metal locking body. Once applied, the cable cannot be removed without cutting, making unauthorised access immediately visible.
These seals are particularly useful when flexibility is required because the cable can pass through irregular openings that rigid seals cannot accommodate.
Explore our range of Cable Seals.
✅ Flexible design
✅ High tamper evidence
✅ Suitable for irregular locking points
✅ Available in different cable diameters
✅ Cost-effective security solution
Bolt seals are high-security barrier seals designed primarily for cargo containers and international freight movements. They consist of a hardened steel pin and locking chamber which permanently lock together once applied.
Most modern bolt seals used in international shipping comply with ISO 17712 High Security Seal standards, making them suitable for C-TPAT and customs-regulated cargo operations.
Browse our Bolt Seals range.
✅ Highest level of physical security
✅ ISO 17712 compliant options available
✅ Ideal for international freight
✅ Strong resistance to forced removal
✅ Widely accepted by customs authorities
When comparing cable seals vs bolt seals, security level is often the deciding factor.
Bolt seals provide a higher physical barrier against forced entry because they use hardened steel components designed specifically for international freight security.
Cable seals still offer strong protection but focus more on tamper evidence and flexibility than maximum physical resistance.
Winner: Bolt Seals
This is where cable seals excel.
The steel cable can be threaded through oddly shaped openings, valves, tanker fittings, and equipment where bolt seals simply cannot be used.
Winner: Cable Seals
For international container shipping, customs agencies often require the use of ISO 17712 High Security Seals. Bolt seals are commonly used to meet these requirements.
Cable seals can also be manufactured to ISO 17712 standards, although not all cable seals qualify as high-security seals.
Winner: Bolt Seals (for standard container compliance)
Because they are adjustable and available in multiple lengths and diameters, cable seals work across a broader range of applications.
From utility infrastructure to industrial equipment and freight transport, their adaptability makes them extremely popular.
Winner: Cable Seals
Both seal types can be numbered for traceability.
However, bolt seals are often easier to visually inspect during customs and logistics checks due to their standardised appearance.
Winner: Bolt Seals
Choose cable seals when:
Our recent guide Quick Guide to Cable Seals: Types, Uses & Benefits provides a deeper look into cable seal applications.
Choose bolt seals when:
You may also find our article useful:
Container Bolt Seals: Ensuring Maximum Cargo Security
Modern supply chains depend on accountability and traceability. Whether you choose cable seals or bolt seals, the primary objective is the same:
A properly implemented seal programme can help organisations identify security breaches immediately and maintain customer confidence throughout the supply chain.
For an overview of container sealing best practices, see our Complete Container Seal Guide UK.
For additional information about security seals and their role in logistics, see the industry overview provided by Wikipedia: https://en.wikipedia.org/wiki/Security_seal Seal Overview.
When evaluating cable seals vs bolt seals, there is no single solution that suits every application.
If you require maximum protection for international freight and shipping containers, bolt seals are typically the preferred choice. If your application demands flexibility, versatility, and reliable tamper evidence across a wide range of assets, cable seals often provide the better solution.
At Acme Seals Ltd, we offer a comprehensive range of both cable seals and bolt seals to meet the needs of logistics, transport, manufacturing, utility, and industrial sectors.
👉 Visit our homepage or browse our Cable Seals and Bolt Seals collections today.