: Wood, most plastics, ceramics, concrete, and fiberglass.

: It bonds to a wide variety of surfaces including: Metals : Steel, aluminum, iron, brass, and copper.

If you are looking for a key feature of adhesive (sometimes colloquially referred to as "the tar" because of its thick, dark grey consistency when mixed), its most significant feature is its steel-reinforced high tensile strength , which makes it a viable alternative to torch welding for many repairs. Key Features of J-B Weld Original