A vacuum sealer is a kitchen appliance that removes air from food packaging to preserve and extend its shelf life. The machine uses a suction mechanism to remove the air from a plastic bag or container, creating an airtight seal. This process helps prevent food from developing freezer burn or spoiling, as well as preserving its freshness and nutrients. Vacuum sealers are commonly used for storing bulk or perishable foods, marinating and tenderizing meat, and keeping food fresh during travel. They are also beneficial for saving space in the freezer or pantry and reducing food waste. Overall, a vacuum sealer is a convenient and efficient way to prolong the lifespan of food.