Can sealing machines can be manual, semi-automatic, or fully automatic. Manual machines require the operator to place the can and lid on the machine, while semi-automatic machines have a conveyor belt to feed the cans into the machine. Fully automatic machines can feed both the cans and lids into the machine. Can sealing machines can seal a wide range of can sizes and materials, including tin, aluminum, plastic, paper, and glass. The lid is usually made from tin-plated steel.