Henkel LOCTITE 401 Universal High-Strength Instant Adhesive

Henkel LOCTITE 401 is a high-performance, clear, liquid cyanoacrylate designed for the rapid assembly of a vast range of industrial materials. Firstly, this universal instant adhesive provides uniform stress distribution and delivers exceptional tensile and shear strength to bonded components. Consequently, maintenance and production teams rely on this formula for high-strength repairs and the precision assembly of close-fitting parts.

Technical Performance and Chemical Properties

In addition to its bonding versatility, LOCTITE 401 features a low viscosity of 100.0 mPa·s, allowing it to penetrate tight gaps up to 0.15 mm. Regarding its curing process, the adhesive utilizes a moisture-cure technology that achieves a very fast fixture time on steel of only 5.0 seconds. Furthermore, the formula features reduced hazardous ingredients, which significantly improves occupational safety for manual application and dispense systems. Therefore, this adhesive serves as an ideal solution for fast-paced environments where safety and speed remain critical factors.

Material Compatibility and Versatility

Specifically, this general-purpose adhesive effectively bonds a wide range of similar or dissimilar substrates, including metals, rubbers, ceramics, and most plastics. Because it is surface-insensitive, it is also perfectly suited for bonding porous materials such as wood, paper, leather, and fabric. Moreover, users can successfully assemble difficult-to-bond materials like Polypropylene (PP), Polyethylene (PE), and PTFE when they use it in conjunction with LOCTITE SF 770 primer. As a result, the adhesive remains stable across an operating temperature range of -40.0 °C to 120.0 °C.

Additionally, the product provides a high shear strength on grit-blasted mild steel of 20.0 N/mm². This ensures that once the liquid cures, the bond remains permanent and resistant to mechanical stress. Because it comes in a clear liquid form, it provides a clean, aesthetic finish for visible joints.

Common Industrial Applications

Because of its universal nature, Henkel LOCTITE 401 appears in nearly every manufacturing sector. For example, technicians frequently use it for emergency repairs, gasket bonding, and electronic housing assembly. Finally, the combination of very fast fixturing and high-strength performance ensures that your assemblies remain secure immediately after contact. This makes it a top-tier selection for any project that prioritizes both material flexibility and rapid structural integrity.