Caulking

A method of joining two components by utilizing their protrusions and depressions without using welding or adhesives. Compared to welding or adhesives, it has advantages such as being usable with coated metals since no heating is involved, and enabling bonding between different materials. Types of caulking include lock seam caulking, seaming, roll hemming caulking, spot caulking, and corner caulking. Double-sided caulking is also a type, with bolts and nuts being widely known examples.