Can seamer

A can seamer is a machine used to seal the lid to the can body. The lid or ' 'end' ' is usually tinplated steel while the body can be of metal (such as cans for beverages and soups), paperboard (whisky cans) or plastic.

The seam formed is generally leak proof, but this depends on the product being canned. The seam is made by mechanically overlapping the two layers to form a hook.