GUSUCIN 48 Pack 5-100ml Glass Vials Protective Sealing Stickers ⭐⭐⭐⭐⭐ Work well to seal reusable vials after aluminum caps removed

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I wanted some way to seal off my reconstitution solution after opening the aluminum seal cap on the vial. These GUSUCIN 48 Pack 5-100ml Glass Vials Protective Sealing Stickers are a great option. 

They're not sterile, but they help keep out dust and might prevent any drips or leaks. Be sure to sterilize any vial before use, of course.

They fit a variety of vial sizes, from 5mL to 100mL, as long as the cap size stays consistent, which it usually does for these larger sizes. Note that there is a separate set for smaller 3mL vials.

They peel off the backing easily and stick firmly to the rubber surface. The stickers feature a little tab for easily pulling it back off the vial when done. 

The stickers come in a variety of colors so you could color code your vial contents. 

My one regret is that these are not reusable and instead are disposable, but that's not the fault of the manufacturer. I might look for reusable caps next.

I'm very pleased with this sticker set and the functionality it brings to my peptide supplies!