Thank you for answers.
I have to also mentions that I would use this also for sealing food related stuff (like bottles, jars), so it's better if wax (+additives) will be natural and non-poisonous.
It's also important that wax is solid, but brittle in room temparature, so wax seal can be...
I need to find out this kind of wax:
-it's solid hard in room temperature (it needs a knife to be cut), but also brittle
-it's melting in above 100C (212F) when heated
-it doesn't have sticky surface
-it needs to be water-resistant
So mainly this would be for sealing wax that can be...