Vacuum sealing jars of Simple Syrup So I'm looking to make some simple syrups (lavender, basil, etc...).  In looking around I see that making 1:1 syrups via the "hot" process it should safely last two weeks and up to a month.  

If I were to get a vacuum sealer, would that preserve it longer?  This would be a resealable system, not a one time seal process.   If the vacuum sealer would be effective what product specifically would do so? 

Preliminary I was looking at this one:  http://www.amazon.com/FoodSaver-T03-0023-01-Wide-Mouth-Jar-Sealer/dp/B00005TN7H

Perhaps there is something better or perhaps this is not meant for liquids.
sealing a jar just to reseal it is not practical and would not help preserve the longevity of these syrups and shrubs.