I have also found that the glass jars from pickles, jelly, etc. do not seal well at times. Some are OK, others leak after a while. I have not seen obvious seal damage from the vapors but it does not take much damage to cause a leak. I will most likely get some of the metal cans for long term storage.
A local auto paint store has the metal cans in various sizes. I also save the empty cans of clear dope to store other colors.