It is a neoprene rubber adhesive that could be employed for a general adhesive but is especially successful when fastening two nonporous supplies together. Applying an epoxy for gluing steel is often a handy substitute to welding, soldering, or bolting. A very robust epoxy for steel is Loctite Epoxy Steel/Concrete. https://www.propanraya.com/id/produk/epoxy-fast-dry