Home > News > Content

Product Categories

Contact Information

  • Shandong Tengxin Seal Co.,Ltd

  • ADD: Shandong Dezhou Qingyun Economic development zone

  • Mobile: +86-18615271063

  • Tel: +86-534-6100660

  • Email: txsales02@tengxinsy.com

Nov 27, 2017


These are of intermediate strength and require a stronger or larger tool and more effort to cut open than indicative seals. Added strength can help avoid accidental breaking or easy entry, without tools.



This term is now applied to barrier seals that are the strongest and most difficult to cut open. Larger and stronger tools are needed to cut them open. The standard testing for this category requires resistance to specific levels of pull, bending and crushing.

Refer to the standards of ISO-17712 and C-TPAT for more on this.

Seals tested and certified to meet the High Security standards of ISO-17712 are stamped with the letter (H) and the identity of the manufacturer. Ocean containers, rail cars and long-haul trucks are the most common commercial uses for barrier seals.