Made with material 3M™ Water Contact Indicator Tape 555
These adhesive labels stain and turn red permanently once in contact with water.
The warranty seals are stickers printed on an ultra-destructible PVC material, they adhere immediately once placed on any surface, and are easy to apply like a common sticker even on flat, curved, concave, and convex surfaces.
These seals are therefore used on all products under warranty and are applied to certify any possible tampering attempt by the customer or, in this specific case, if the device gets wet.
They are widely used by all service and repair centers and sales points of any electronic, telephone, IT, mechanical equipment, and many other types of use.
Water Contact Indicator Labels – Ø 4 mm, 529 pcs, white → permanent red
Self-adhesive water contact indicators that turn permanently red when exposed to water-based liquids. Ideal as warranty seals and liquid damage proof on electronics and moisture-sensitive goods. Made with 3M™ Water Contact Indicator Tape 555 on an adhesive backing for fast, reliable application.
Why choose them
- Instant evidence: white → red color change is clear and irreversible.
- Micro size Ø 4 mm: fits tight spaces (bezels, screws, seams).
- Universal adhesion: bonds to flat/curved plastics, metals, glass and painted parts.
- Professional use: service centers, QA, production, logistics.
- Fewer disputes: documents water ingress/condensation even post-shipping.
Typical applications
- Consumer electronics: smartphones, tablets, notebooks, batteries, cameras, LCD/LED.
- IT/Industrial: PCs, servers, networking, measurement devices.
- Appliances and small devices.
- Logistics & transport: maritime/air/ground shipments to detect water exposure.
How they work
The active dot contains a hydro-sensitive indicator. On contact with water it turns red and stays visible after drying, providing a permanent record of liquid exposure.
Application (best practices)
- Clean the surface (degrease and dry; no dust/oil).
- Place near likely ingress points (ports, seams, vents), away from routine cleaning.
- Press firmly 5–10 s to ensure adhesion.
- Store unused labels sealed in a dry environment (controlled humidity).
Key specifications
| Pack content |
529 labels (Ø 4 mm) — multiple units ship in continuous strip |
| Indicator diameter |
4 mm (for confined areas and point seals) |
| Material |
3M™ Water Contact Indicator Tape 555 + pressure-sensitive adhesive |
| Color change |
White (dry) → Red (on water contact) |
| Use |
Self-adhesive; single-use; apply on clean, dry surfaces |
| Permanence |
Indelible indication after activation (does not revert) |
| Customization |
Custom prints/sizes available for runs > 10,000 pcs |
| Bulk pricing |
Discounts for larger quantities |
Important notes
- Designed to detect water / water-based liquids. Oils/solvents may not trigger the indicator.
- Avoid pre-activation from condensation; keep unused labels sealed and dry.
- Once activated and dried, labels remain red and are not reversible.
At a glance
- 529 pcs, Ø 4 mm indicators, ready to use.
- Permanent white → red change upon water contact.
- Ideal for warranty seal, QA and dispute reduction.
FAQ
Can I use them on phones and laptops?
Yes. Place them near ports, screws, seals or airflow openings.
Do they react to humidity?
They indicate liquid contact or localized condensation. Store unused labels sealed to avoid accidental activation.
Are they reusable?
No, they are single-use. Removing them compromises reliability.
Do you offer custom versions?
Yes — for orders > 10,000 pcs we can supply custom sizes/prints.
