How to cover/cap pre-sealed (Sterile) vials?

[Mr. Blayze]

I am going to homebrew and I researched that most people will buy pre-sealed or sterile vials rather than open for bacterial reasons. Anyways...

What can I use to cap/seal the top of the pre-sealed vial? So that the rubber isn't showing? thanks!

 

[fakesn2000]

I think what you're looking for is the aluminum seals.

You'll probably want a crimper but that's unnecessary if it's just for personal use.