LOCTITE 401 is a high-performance, general-purpose instant adhesive formulated with an ethyl cyanoacrylate base. This low-viscosity, clear, colorless to straw-colored liquid provides rapid bonding for a wide range of substrates, including porous materials like wood, paper, leather, and fabric, as well as acidic surfaces. It achieves fixture strength in 3-10 seconds on steel and offers a maximum gap fill of 0.05 mm. Designed for operating temperatures from -40°C to +120°C, Loctite 401 delivers high tensile and shear strength for reliable, durable repairs and assembly of small components.