Personalized guarantee seal for intact and recognizable packages
The personalized guarantee seal closes and signs your packages. Applied as a bridge over the opening, it must be broken or cut to open the package: the customer immediately sees that the product arrives closed and your brand remains clearly recognisable.
At StickyAttack, choose the material, shape, size, and quantity, upload your artwork, and receive a free digital proof before production. They are suitable for e-commerce, food and cosmetic packaging, kits, and gift boxes.
What is a guarantee seal for?
An adhesive seal helps show the integrity of the packaging and to enhance the brand. Positioned on the flap of boxes, envelopes or jars, it makes the opening of the package clear and can feature the logo, company colors and messages such as “quality guarantee” or “seal of authenticity”.
This product is a custom lock seal – it is not a VOID label or a certified tamper-evident device.
Materials and finishes available
Choose the material based on the use and aesthetics of the packaging:
- Coated paper: versatile, with sharp colors for logo and texts.
- Gloss white or transparent polyester: indicated when greater resistance to water and humidity is needed.
- Brown Kraft Paper: for artisanal and natural packaging.
- Shiny gold paper: for cosmetics, gift lines and premium packaging.
- Laid paper, oilproof or fluorescent yellow: for aesthetic needs and specific applications.
Shapes and dimensions of the adhesive seal
You can choose a Cut Shape die-cut, square, rectangular, with rounded corners, round or oval. Ready-made sizes are available from 3×3 cm up to 12×12 cm, as well as customized sizes.
Small stickers work well on the cap or flap; the narrow rectangular formats are suitable for bridging boxes and envelopes.
How to apply the seal
- Clean and dry the surface, eliminating dust and grease.
- Place the bridge seal at the point of opening the package.
- Press evenly from the center towards the edges to avoid bubbles and creases.
How to create customized warranty seals
- Choose material, shape, size and quantity in the configurator.
- Upload a high-resolution file or get help from the Design Team.
- Check and confirm the free digital proof received via email or WhatsApp.
- After production, you receive the order with tracked shipping.
Want to check the material and finish before placing a large order? You can buy the sticker samples.
Giacomo P. –
A well-made product, crafted with care and excellent materials. They were extremely friendly and responsive, and it arrived in just two days. It doesn’t get any better than this—well done!
Stefano Ivan R. –
A really well-made product. I’m also extremely satisfied with the fast preparation and attentive customer service. Thank you!
Martina Pesce (verified owner) –
Excellent quality, fast turnaround, and outstanding professionalism and helpfulness. I’ll definitely order again in the future!