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Unisto Padlock 4

A Padlock Type of Security Seal The high security Padlock 4 provides additional tamper resistance over Padlock 3, with the same ease of sealing - designed to be able to be sealed with a single hand. Hasp diameter 3.8 mm. Variety of colours for logistical control available. Bar-code option for efficient data capture.

Features of this security seal

Type of Seal
Padlock Type Seals
  • Seal re-opens if not properly locked
  • Locking section with different diameters in conjunction with transparent locking insert increases tamper-resistance
  • Free movement in locking mechanism prevents glueing, allows integrity of the seal to be checked easily
  • Hasp Design allows single-handed application
  • Various colours for logistical functions
  • Customer name/logo for clear identification
  • Bar-coding for fast, accurate and reliable data capture and streamlining operations
  • Mats of 10 seals allows sequential distribution

Minimum size


Housing: polypropylene (PP)

Locking mechanism: polycarbonate (PC

Tensile strength
Approx. 5 kg
6 digits

Interleaved 2/5 or barcode 128

Customer name/logo
Foil printed

Dark blue, dark green, red, grey

Other colours available on request


Mats of 5 or 10 seals, box of 1000 seals

44.0 x 12.0 x 24.0 cm (0.012 m3), approx. 2.1 kg


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.

Unisto Padlock 4 - Security Seal
Padlock Security Seal. Seal re-opens if not properly locked.