Vacuum Sealing Ball Jars in the Harvest Right Sep 15, 2022Brian Witmer Share Facebook Twitter Pinterest Tags ball jars seal jars vacuum seal Harvest Right hacks! Unlock the hidden secret of your freeze dryer. I asked for help and YOU delivered! Using the vacuum pump on your freeze dryer, you can vacuum seal up to 10 canning jars at a time. The seal you get it unbeatable!