A "seal jar" refers to a closed container with an airtight lid or cover. It is used to keep things fresh or to preserve the contents inside by preventing air and moisture from getting in. Full definition
You can also keep it in tightly sealed jars in your refrigerator for a couple of weeks. (fieryfoodscentral.com)
You can store sealed jars of salad in the refrigerator for up to a month or so, once the seal has been broken, it will keep for up to 1 month. (kimberlysnyder.com)
Stir in the probiotic powder, seal the jar with a lid, then wrap the jar in a towel to keep it insulated. (detoxinista.com)