Our holographic stickers use a permanent, pressure-sensitive, acrylic, solvent-based adhesive.
It has a peel-adhesion to steel of approximately 28N/100mm, meaning it's a medium-strength adhesive, making it suitable for almost any application.
If you would like more information, the datasheet for holographic stickers contains more technical detail. Find more information about the adhesive at the bottom of page 2.
You can learn more about the different types of adhesive here.