Product Name high security container door seal lock Material The body is iron.the Double lock mechanishs are made with zinc. The wire is galvanized steel wire rope (NPC),we can make the seals with stainless steel wire rope personalized for the different customers. It is non-preformed cable (NPC). Color White, blue , orange , or customize Standard ISO17712 Diamter of wire 1.5mm ;1.8mm Length of wire 20cm. 30cm or customize Printing 1)Printing specifications: customer name or acronym on top , sequential numbers on the bottom 2)Logo: Per request 3)Serial numbers: Laser printing with back color , up to 7 characters of more than 2mm height, or customized Application - ISO Containers - Truck doors - Road tankers - Railway wagons - Etc... How to seal it ? After the user seal it, we suggest the user cut the wire at the end. because the wire is NPC,The wire will be scattered like the pictures on the left. it is more security. How much is the tensile strength ? We tested the seals in the general weather, The tensile strength is more than 170kgs (375lbs)