Feeko Vials, 80pcs Plastic Test Tube with Screw Cap Scale Small Bottle Tube Blue Seal Cap Container Sample Vial Storage Container Laboratory Test Tube

Ordered these instead of my normal brand of 5ml vials because these appeared identical but were slightly cheaper. Appears they cut the cost by not putting in watertight gaskets. They mention that they don't have gaskets in the description, but they also mention that they still seal tightly. Not tightly enough, though. I'm returning them.If you're using these for solids that don't need to be kept safe from external liquids, then they should work fine. Or, if the vials are always going to be standing right-side-up and you aren't worried about a tiny bit of evaporation, they'll work okay. However, if you need something actually watertight, look elsewhere. ASIN B074QKMF2G is almost identical but is watertight even under slight pressure in my testing, and only costs a tiny bit more.