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ISO 17712 - Mechanical Seals for Freigth Containers
4.4.3 To preclude the simple removal of a bolt seal by pulling the pin head or locking body through a worn container hasp, the minimum diameter (or minimum widest cross-dimension) for the metal components of a bolt seal shall be 18 mm.
Even though this point does not become effective before March 2012, our Unisto Hi-Genius already fulfills this requirement since the first day of introduction in 2010.