I routinely keep such chemicals as sodium sulfite and sodium carbonate, which I buy in large quamtiities, in Mason jars. To get an airtight seal just snug the band down gently. You don't need to use a torque wrench on them. You can buy new lids which are not expenive.
For canning these jars depend on a vacuum formed during the canning process. Air pressure keeps them tight. Once the jars cool the bands can be removed since they serve no other purpose.