Mastic-colle PU Sikaflex® 252 Sika Sikaflex® 252 by Sika is a high-strength polyurethane (PU) adhesive sealant engineered for structural bonding in transportation and industrial applications. Known for its outstanding mechanical strength and excellent adhesion to metal, aluminum, galvanized steel, wood, and plastics, it is ideal for bonding sandwich panels, truck bodies, commercial vehicles, trailers, and industrial assemblies. Its resistance to vibration and dynamic stress makes it suitable for load-bearing structures and demanding environments. Easy to apply and paintable after curing, this PU adhesive ensures durable, secure, and long-lasting bonding performance. Learn more