![20mm Hole Punched Vial Seals, Red, Bag 1000 20mm Hole Punched Vial Seals, Red, Bag 1000](https://voigtglobal.com/8800-large_default/red-20mm-open-vial-seals-aluminum.jpg)
20mm Hole Punched Vial Seals, Red, Bag 1000
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20mm Hole Punched Vial Seals, Red, Bag 1000
For serum vials with a 13mm hole opening and 20mm outer top rim diameter. Seal perforation is already punched through leaving a smooth opening to expose an underlying stopper (sold separately on this website). This size of vial seal is typical for most serum vials ranging from 5mL to 200mL (exceptions exist - please measure your vial OUTER top diameter first).