A bag sealer is a device used to seal plastic bags, ensuring that the contents remain fresh and protected from air and moisture. These sealers can be manual or electric, and they work by applying heat to the edges of the bag, melting the plastic to create a secure seal. They are commonly used in kitchens for food storage, as well as in various industries for packaging products. Using a bag sealer can help reduce food waste and extend the shelf life of items like snacks, leftovers, and bulk purchases. Many people also use bag sealers for organizing items, such as craft supplies or small tools, making them a versatile tool in both home and professional settings.