Tamper-Evident Seals & Security Bags

Ensure chain-of-custody and POPIA compliance during document transit with our heavy-duty security seals.

Available exclusively in South Africa

Unbreakable Chain of Custody

When transferring HR files, medical records, or legal contracts to an offsite storage facility or shredding depot, a standard cardboard box is not secure enough. Paperop provides uniquely serialized tamper-evident seals and reusable security bags to guarantee that your documents were not accessed in transit.

Numbered Pull-Tight Seals

Single-use plastic security seals featuring sequential serial numbers. Designed to lock document boxes, courier bags, and secure bins. Cannot be opened without breaking the seal, providing immediate visual evidence of tampering.

Packs of 100 or 500 Request Pricing

Reusable Document Security Bags

Heavy-duty PVC coated nylon bags designed for the secure transport of sensitive files. Features an internal entry zip and a locking chamber specifically designed to hold our numbered tamper-evident seals.

A4 and A3 Sizes Available Request Pricing

Essential for POPIA & Legal Compliance

A broken seal instantly alerts you to a potential data breach, allowing you to take immediate action required under the POPI Act.

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Why Tamper-Evident Seals Are Essential for POPIA Compliance

Under POPIA, you are responsible for the security of personal information at every point in its lifecycle — including while it is in transit. If documents are transported in unsealed bags or boxes, there is no way to prove that unauthorised persons did not access them between your premises and the destination. A tamper-evident seal closes this gap entirely.

Paperop's tamper-evident seals and security bags are the same materials used in our own document transport operations. When a Paperop driver collects documents from your site, they are immediately sealed into our numbered tamper-evident bags. The seal number is logged against your collection job. When the bags arrive at our facility, the seals are inspected and the intact seal numbers recorded — creating an unbreakable chain of custody.

Product Range

Security Deposit Bags

Heavy-duty polyethylene bags with a tamper-evident heat seal. Once sealed, any attempt to open the bag leaves a permanent "VOID" imprint visible from both sides of the bag.

  • Sequential pre-printed serial numbers on each bag
  • Available in A4, A3, and large document sizes
  • Thickness: 100 micron (heavy duty)
  • Minimum order: 50 bags
Void Tamper Labels

Self-adhesive labels that leave a permanent "VOID" or "OPENED" message on the surface when removed. Used to seal archival boxes, file folders, and equipment.

  • Sequential serial numbers printed on each label
  • Irreversible — cannot be reapplied once removed
  • Available in 50mm × 25mm and 90mm × 38mm
  • Minimum order: 100 labels

Order Tamper-Evident Seals

Custom serial number ranges available. Bulk discounts from 500 units. Nationwide delivery.

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Security Best Practices

To maintain a robust chain of custody, it is crucial to log the serial number of every tamper-evident seal or security bag before it leaves your premises. The recipient must then verify this serial number against the transport manifest upon arrival. Any discrepancy or sign of a "VOID" message must be immediately reported to your compliance officer. Store unused seals and bags in a secure, access-controlled location to prevent unauthorised individuals from obtaining them and attempting to reseal compromised documents.

Document Archiving Supplies

Frequently Asked Questions

Everything you need to know about purchasing professional archival boxes, barcodes, and security seals in South Africa.

When applied across the box lid and base seam, the seal bonds permanently. If an unauthorized individual attempts to peel or lift the seal, a high-contrast 'OPENED / VOID' hidden pattern permanently surfaces, providing irreversible visual proof of tampering.

Under POPIA Condition 7, data controllers must prevent unauthorized access or modification of personal information. Tamper-evident seals prove that physical files were not opened or read between collection, storage, and certified destruction. All processes strictly align with POPIA Condition 7 security safeguards, Section 14 retention limits, and Section 19 access restrictions, protecting organizations against administrative penalties of up to R10 million from the South African Information Regulator.

Yes. Every seal features a unique serialized number and matching Code-128 barcode. The serial number is recorded on the chain-of-custody collection manifest and verified whenever the carton is accessed. All procedures adhere to strict South African statutory standards, including POPIA Condition 7, the Companies Act 71 of 2008, and the Electronic Communications and Transactions Act, providing enterprise clients with transparent Service Level Agreements and audited operational security.

No. Paperop seals use dual-reaction acrylic adhesives with thermal and cryogenic indicators: exposure to heat causes color-bleed voiding, while freeze sprays cause the tamper-evident layer to shatter, exposing intrusion. All procedures adhere to strict South African statutory standards, including POPIA Condition 7, the Companies Act 71 of 2008, and the Electronic Communications and Transactions Act, providing enterprise clients with transparent Service Level Agreements and audited operational security.

Best practice is to apply two seals: one bridging the front lid flap to the box front, and a second bridging the rear lid flap, preventing unauthorized access from either side without breaking a seal.

Any carton with a compromised seal triggers an immediate security incident protocol: our custody team halts dispatch, notifies your designated Information Officer, logs CCTV footage, and conducts a content audit. Archive boxes are vaulted in high-bay, climate-regulated facilities starting from R20.00 per carton per month, featuring barcoded randomized shelf placement, 24/7 biometric monitoring, and rapid 1-to-2 hour Scan-on-Demand retrieval with zero exit fees.

Yes. We manufacture customized tamper-evident security cable seals and void labels featuring your corporate logo, custom serial numbering, and customized hidden void messaging for high-security applications on minimum production orders of 5,000 units. All procedures adhere to strict South African statutory standards, including POPIA Condition 7, the Companies Act 71 of 2008, and the Electronic Communications and Transactions Act, providing enterprise clients with transparent Service Level Agreements and audited operational security.

Seals should be applied at room temperature (10°C to 35°C) to clean, dry corrugated board. Unused rolls maintain a shelf life of up to 24 months when stored away from direct sunlight and extreme heat.

Our archive seals utilize a total-transfer formulation designed to permanently mar the carton face upon opening, ensuring that tampering cannot be concealed by re-smoothing the label. All procedures adhere to strict South African statutory standards, including POPIA Condition 7, the Companies Act 71 of 2008, and the Electronic Communications and Transactions Act, providing enterprise clients with transparent Service Level Agreements and audited operational security.

Applying 2 seals per box requires 200 seals for 100 cartons. We recommend ordering a standard roll of 500 seals to account for re-sealing cartons after authorized file retrievals. Archive boxes are vaulted in high-bay, climate-regulated facilities starting from R20.00 per carton per month, featuring barcoded randomized shelf placement, 24/7 biometric monitoring, and rapid 1-to-2 hour Scan-on-Demand retrieval with zero exit fees.
*Errors and Omissions Excepted (E&OE). Content is provided for informational purposes and may be compiled with automated tools. By using this site, you accept our terms and conditions.