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Unisto Indicator

Fixlength Security Seal with a unique designed double-locking closing mechanism. That seal is the optimal solution for sealing of Freight Containers, truck and trailer doors. Well-established in the Transport, Retail, Railway and Logistic sectors. A indicator pin at the end of the strap indicates a proper sealing once seal is closed. Clearly visible breakpoint outside the housing makes it easy to control the seal. Consecutive numbering or barcode enables easy recording of the seal numbers and streamlines operations. Variety of colours for logistical control are available.

Features of this security seal

Type of Seal
Fixlength Seals

Container, Diverse

  • The ultimate double-locking seal with two separate spring inserts which render any post-sealing tampering impossible
  • Spring inserts moulded from engineering plastic and capable to withstand high temperature
  • Cap is secured by unique hot-welding that leaves marks of attempted tampering
  • Indicator pin protrudes from the back of the seal lock to indicate proper sealing
  • Anti-Spin closure

Minimum size


Strap/housing: polypropylene (PP)

Locking spring: polyoxymethylene (POM)

Tensile strength (loop)
Approx. 108N (11kg) 
Up to 7 digits

Interleaved 2/5 or barcode 128

others on request

Customer name/logo
Foil printed or directly laser-marked
Plastic colours (foil)
Red, Blue, Yellow, White & Green  
Plastic colours (laser)
Pink, Light Blue, Light Yellow, Light Green & White 
Mats of 10 pieces, box of 1000 seals, box a 5000 pcs
Packing size
box210mm363 x 189 x 195mm3.6kg
carton210mm985 x 375 x 218mm19.1kg 

Seals should be stored in original box away from direct sunlight and chemical fumes.

Store at 22°C/50% RH. Typical shelf life of seals made of PP and PA are approx. 18 months from date of manufacture.

Nevertheless please do not order more than an annual quantity.

How to close

How to open

Unisto Indicator - Security Seal
Fixlength Security Seal with a unique designed double-locking closing mechanism.