Transparent, colorless, medium viscosity, ethyl-based universal instant adhesive. LOCTITE® 431 is a transparent, colorless, medium viscosity, general purpose, ethyl-based instant adhesive. Suitable for metals, rubbers, plastic and also suitable for polyolefins in combination with Primer LOCTITE® SF 770 or LOCTITE® SF 7239. It has a fixture time of 5 – 10 secs and is well suited to porous and/or acidic surfaces. Well suited to porous and/or acidic surfaces Suitable for metals, rubbers, plastics and suited to polyolefins in combination with Primer LOCTITE 770 or LOCTITE 7239 Ideal for bonding small to medium-size parts Fixture time of 5 – 10 secs. Medium viscosity Excellent adhesion to most substrates Solvent-free Cures very quickly when confined between two surfaces Technical Information Color Ultra Clear Fixture time 5.0 – 10.0 sec. Gap fill 0.15 mm