Overview of Hermetic Storage Bags Hermetic storage are air-tight plastic bags that are designed to keep contents fresh for extended periods by removing oxygen from the storage environment. The bags feature special valves that allow air to be evacuated using a household vacuum sealer or vacuum sealing machine. Once sealed, the bags prevent air from re-entering, which slows down natu... https://medium.com/@rokadevaishnavi51/hermetic-storage-bags-a-comfortable-answer-for-long-term-food-preservation-introducing-innovative-af3e8ebaf1cf