Just ordered some gold lined cans and was wondering on the best way to seal them. I plan on using O2 absorbers and freezing the rice, flour, mashed potato buds, sugar, etc to kill bugs prior to storing. I'm not against using my foodsaver to vacuum bag before putting in the can if necessary as a belt and suspender type of safety. I'm used to the hammer method to reseal a paint can, but uneasy about trusting it for long term food storage that my family may someday depend on. Any help? It would be much appreciated.