Practical inviolable seal, progressively numbered. The fixing is adjustable thanks to the knurled body. The closure is reinforced with a polyacetate insert for maximum security. Non-reusable, it is ideal for sealing packaging with sensitive contents, for identifying and recognizing any object such as trolley, fire extinguishers, security doors, clothing, safety boxes, emergency kits etc. The sealing of the seal is done manually and very easily, no tools are required. Other colors or customizations available on request.