I remove mine from the plastic packaging and put the seeds into small brown glass vials like this:
https://www.amazon.com/gp/product/B00SE4TFD2/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
I then put some desiccant in the glass vial with the seeds to control moisture
I then put the top on the jar and place the jar in a vaccum seal bag and suck all the air out.
I then label i, inventory it and place it in a refrigerator (not freezer) in my basement that is dedicated to seed storage so its only opened a few times a year.
So the seeds end up in a completely air sealed dark cool place environment. I went alittle crazy with seed buying so I want to make sure what I have lasts awhile till I can get to it.