Loctite structural bonding adhesives loctite 29690 loctite ea 3450 is a 2 component epoxy metal bonding adhesive with structural characteristics if you need a reliable solution for bonding or repairing of metal parts this adhesive is the one for you it has gap filling properties for rough and poorly fitting surfaces such as metal ceramic rigid plastics or wood loctite 3450 cures rapidly at room temperature is easy to apply and develops high bond strength applications include bonding