I would be surprised if the top sealed well enough for long term storage.
In the meantime, I have one of those I use to rehydrate pipe tobaccos that have dried a bit too much for my preference, and/or also to add a little flavor to certain tobaccos that could use some. Spread the tobacco out evenly along the bottom, use a spray bottle to carefully dampen the tobacco evenly using either H2O or rum, & cover for a few hours. Works like a charm.