Tamper Seals & Tamper-Evident Security Seals
Custom and stock tamper-evident seals, made in the UK
Red on White
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Red on Chrome
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A tamper seal is a security label designed to show clear, irreversible evidence the moment someone tries to remove or interfere with it. If a seal is lifted, it either fragments or leaves behind a permanent pattern — so tampering can’t be hidden, even if the seal is pressed back down.
We’ve been manufacturing tamper-evident seals in Hawick, Scotland since 2004, for everyone from independent businesses to healthcare trusts and government departments. Below you’ll find our ready-to-go stock seals from just £15 per 100, plus fully bespoke options printed with your own logo and serial numbers.
How tamper seals work
Tamper-evident seals protect in one of two ways:
- They fragment. Any attempt to lift the seal causes it to break apart, so it can’t be removed in one piece or reapplied.
- They leave a pattern behind. When lifted, the seal leaves a permanent mark on the surface — such as a “VOID” message or a checkerboard pattern — that stays visible even if the seal is put back.
Both make interference obvious at a glance, which is exactly what you need for warranties, audits, secure shipments and asset protection.
Our preprinted tamper seals — from £15 per 100
If you need an effective tamper seal without bespoke artwork, our preprinted stock seals are the fast, affordable choice. Choose Red on White (destructible) or Red on Chrome (checkerboard pattern) — just £15 for 100 seals.
| Red on White (Destructible) | Red on Chrome (Checkerboard) | |
|---|---|---|
| Material | Thin destructible film, similar to PTFE/Teflon plumber’s tape | Polyester (Mylar) with a mirror-chrome finish |
| How it shows tampering | Fragments and tears — almost impossible to remove any portion intact | Leaves a permanent checkerboard pattern on the surface |
| Adhesive | Very strong; bonds to almost any surface | Permanent acrylic (needs ~36 hours at room temperature to fully cure) |
| Best surfaces | Textured, pebbled or ridged surfaces, and even over screw heads — the low-stiffness film conforms well | Painted or bare metal and other smooth, clean surfaces; not ideal for low-grade plastics |
| Electronics | Non-conductive — safe to apply directly to computer chips and electronic components | Metallic foil backing is conductive — take care around electrical devices |
| Durability | Outdoor-rated, but not abrasion-resistant | Withstands rough handling and lasts for years |
| Can you write on it? | Yes — with a ballpoint pen, before removal from the backing | Yes — with CD-marking pens, on the smooth surface |
Because the white destructible seal is so pliable and non-conductive, it’s a favourite for IT and electronics — sealing computer cases, wire connectors and serrated bottle caps, and for warranty protection where you can hand-write a reference before applying it.
Custom-printed tamper-evident seals
Need your logo, text, batch numbers or sequential serial numbers on the seal? We print fully bespoke tamper-evident labels in a range of materials to suit the job:
- PolyVoid — leaves the word “VOID” behind on both the surface and the label if lifted.
- PolyBreak — destructible polyester that breaks apart on any removal attempt.
- PolyCheck — leaves a distinctive checkerboard pattern when tampered with.
See our Security Labels page for the full custom range and pricing. For the very highest security requirements, we also produce FIPS 140-2 maximum-security seals, and for anti-counterfeit protection we offer holographic tamper-evident labels. Barcodes and serial numbers are included at no extra charge, with low minimum orders and proofs emailed before printing.
Where tamper seals are used
Tamper-evident seals are used wherever it matters that something hasn’t been opened, swapped or interfered with, including:
- Warranty and “warranty void if removed” protection on electronics and equipment
- Sealing IT hardware, server cases and components against unauthorised access
- Tamper-evident closures on boxes, cartons, bags and bottles
- Pharmaceutical, healthcare and laboratory sample security
- Secure logistics and chain-of-custody for shipments
- Asset and equipment identification where switching needs to be prevented
How to choose the right tamper seal
A few quick questions point you to the right product:
- What surface is it going on? Smooth metal or plastic suits the chrome checkerboard seal; textured, awkward or electronic surfaces suit the destructible white film.
- Indoors or outdoors? Both are outdoor-rated; if the seal will face abrasion, the chrome material is the tougher choice.
- Is it on electronics? Use the non-conductive white destructible seal directly on chips and components.
- What evidence do you want left behind? A “VOID” message, a checkerboard pattern, or simple fragmentation — we can match the effect to your needs.
- Do you need your own branding or serial numbers? Then a custom-printed seal is the way to go.
Not sure? That’s what we’re here for — send us a photo or a description of your application and we’ll recommend the right seal.
Frequently asked questions
What is a tamper-evident seal?
A tamper-evident seal is a security label that shows permanent, visible evidence if it’s removed or interfered with — by fragmenting or by leaving a “VOID” or checkerboard pattern behind — so tampering can’t be concealed.
What’s the difference between a tamper seal and a normal label?
A normal label can be peeled off cleanly and reapplied. A tamper seal is designed to self-destruct or leave a mark on removal, so any interference is obvious.
Can tamper seals be printed with my logo and serial numbers?
Yes. We print fully bespoke tamper-evident seals with your logo, custom text, barcodes and sequential serial numbers — all included at no extra charge.
What’s the minimum order?
Our preprinted stock seals start at just 100 (£15). Custom-printed seals also have low minimum orders, so small runs are no problem.
Can I use tamper seals on electronics?
Yes — our white destructible seal is non-conductive and can be applied directly to computer chips and electronic components. (The chrome seal has a conductive foil backing, so take care around live electrics.)
Get in touch
Need tamper seals for your business? Contact us or call 01450 363635 for advice, samples or a fast quote — you’ll speak directly to the team who make them.