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Is lacquer sealer flammable or a health problem once it is dry?
Not to my knowledge, however it isn't suitable for some uses such as a counter top that will come into contact with food. You never want to leave wet rags balled up in a pile, once dry, the self ignition problem is no longer an issue. It is the vapors emitted by the liquid product that are flammable, the dry product isn't, not to say that it can't burn, only that it won't self ignite.