RK-T type Container Seals

the pin diameter (7 mm vs. 8 mm) is one of the important specs in container bolt seals. Here's the breakdown: 1. Strength & Security 7 mm Pin Slightly thinner, but still strong enough for most export shipments. Provides good resistance against tampering and cutting. 8 mm Pin Thicker and stronger, harder to cut. Preferred for higher-security requirements or for compliance with stricter international standards. 2. ISO 17712:2013 Standard To qualify as a High Security Seal, the bolt (pin + barrel) must meet certain shear, bending, and impact tests. Both 7 mm and 8 mm can be ISO 17712-certified if manufactured properly, but 8 mm gives extra margin of strength. 3. Customs & Shipping Requirements Many shipping lines and customs authorities (like US C-TPAT) often recommend or insist on 8 mm pins, since they're harder to tamper with. 7 mm is acceptable in many regions but may not always pass stricter checks in the US/EU. 4. Practical Use Both are easy to apply without tools. Both need a bolt cutter for removal. The difference is mainly about security assurance: 7 mm = Standard exports, cost-effective 8 mm = Higher security, premium compliance In short: The 8 mm pin bolt seal is thicker, stronger, and more widely accepted for high-security international shipments. The 7 mm pin is still secure and compliant in many cases, but 8 mm offers extra strength and better global acceptance.