421 Techniglue 

Adhesive Technologies 421 TECHNIGLUE is a two part, thixotropic adhesive formulated for use with Techniglue Hardener or ADH26 liquid hardener for lower viscosity gels.
Techniglue cures at room temperatures to product high strength; waterproof bonds with minimal post cure requirements.
Techniglue is typically used for bonding structural elements fabricated from 
• Wood
• Concrete
• fibreglass/composites
• stone and marble
• pottery
• metal (ferrous and non ferrous) 
• some plastics.