30-50ml vials ?

Using 30 mL vials myself and if you use the entire top you are good. I have used a 30mL vial 2-3 times using a 22 gauge needle. If the rubber is good quality you will not run i to issues, its when cheap rubber is used that issues raise.
Definitely agree. Back in the 2000’s, when pretty much everyone was 21-22g to draw with, stopper degradation was something only ever spoken about as a possibility by the paranoid types, eg the kind that also worried about needles snapping inside the muscle during a jab.

Back then most labs would of been buying branded stoppers, eg Wheaton. It’s the influx of cheap Chinese generics that’s made degradation an issue.
 
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