Security labels

A security label is a sticker that makes it visible whether packaging, a device or a door has been opened. The label consists of multiple layers that separate as soon as someone removes it. A message such as "OPENED" or "VOID" then appears in the label. Reapplying it without visible damage isn't possible, so tampering always remains visible.

With a residue label, a permanent layer remains on the surface after removal, such as "VOID" or "OPENED." This provides evidence of opening on the surface itself, even without the label. With a no-residue label, the message only appears in the label, and the surface stays clean. Choose a residue label when permanent evidence on the surface is needed. Choose a no-residue label when the surface needs to stay intact, such as on electronic equipment or glass.

For cardboard and paper, use a residue label, such as the TT-84 or the Label Lock High Residue. These labels adhere well to cardboard and paper and leave a permanent layer on the surface when removed. The Label Lock High Residue has a wider temperature range of -30 to +70°C and a higher quality standard through ISO 9001:2015 certification.

For metal, glass and electronic equipment, use a no-residue label, such as the ZT-88 or the Label Lock Low Residue. These labels adhere well to smooth, hard surfaces and don't leave adhesive residue. That matters for equipment where the surface needs to stay clean and undamaged. The Label Lock Low Residue is resistant to temperatures from -30 to +70°C and is manufactured to ISO 9001:2015. The ZT-88 has a narrower range of -10 to +40°C and doesn't have this certification.

A security label needs 15 to 20 minutes to fully adhere to the surface. During that time, the adhesive builds up its maximum strength. If the label is removed earlier, the message may not appear fully. For proper performance, the surface needs to be clean, dry and free of grease.

No. A security label is single-use. As soon as the label is removed, the layers separate and the message appears. Reapplying it without visible damage isn't possible. That's exactly the core of how it works: every opened label is immediately recognizable as opened.

A security label with a counterpart has a tear-off section carrying the same unique number as the main label. You stick this section onto a file, form or checklist. This links the seal directly to your records without copying the number by hand. You choose this label when you need to register seals per item or person, such as when issuing equipment or for access control.

For e-commerce shipping parcels, use the Verzegeld Verzonden (Sealed & Sent) label. This label is specifically designed for boxes, plastic bags and cardboard mailers, and immediately shows whether a parcel has been opened in transit. The label is ISO 9001 and ISO 14298 certified and carries a unique number per seal. Companies using the label see fewer disputes on delivery and fewer false claims about incomplete shipments.