Chutney does not need to be vacuum-sealed - its preservative is vinegar, and it will last for years if the vinegar is prevented from evaporating. You can pot it up when the mixture and the jars are cold. If the jars are not 100% sterile, it doesn't matter as the vinegar is also a form of sterilizer.
What you DO have to avoid, however, is metal lids. The vinegar will rapidly start corroding the metal. Use coffee jars with plastic lids - if you are worried use a jam-pot circle of transparent plastic between the top of the jar and the plastic screw top.
I have made masses of chutney, and I know from long experience