Contact adhesives are a type of glue that bonds surfaces together upon contact. They are typically used for materials like wood, metal, and plastic. When applied to both surfaces and allowed to dry briefly, they create a strong, instant bond when pressed together. This makes them ideal for projects requiring immediate adhesion. These adhesives are often found in various forms, including liquid, spray, and tape. They are popular in industries such as construction and furniture making due to their versatility and strength. However, proper ventilation is essential when using contact adhesives, as they can emit strong fumes.