whenever i have really really dry buds i put them in a freezer ziploc bag then cut up a whole lemon/orange/apple/whatever fruit put it in a small ziploc bag and put it into the larger bag. close it up for a day or two and it moistens the dry bud and leaves it with a nice flavor/smell... however i would not leave the same fruit in there for longer than 2-3 days and would NEVER vacuum seal them. Only reason to vacuum seal is to reduce volume of large amount of bud for transport however there are other methods used additionally to cut down on chance of smell as well which i will not talk about but i wouldnt vacuum seal... if your goal is storing it let them dry and put in jam canning jar and just put in your fridge maybe wrap it up in a couple black garbage bags if you open your fridge lots but i mean if you are going to be smoking it within a month this is probably redundant