Loctite 401 Prism Instant Adhesive, surface insensitive low/medium viscosity, clear, surface insensitive, one part, room temperature cure, instant adhesive. Designed for OEM assembly of difficult-to-bond materials which require uniform stress distribution. Particularly suited for bonding a wide range of materials, including metals, plastics, and elastomers. Ideal for close fitting applications.

Instant adhesives are cyanoacrylates and as the name suggests, they cure very rapidly. Instant adhesives are one-part products that cure by reacting with moisture. Instant adhesives are designed for processes with high strength requirements for a small bond area, tight-fitting joints, and a need for rapid curing.