Mastic-colle STP Sikaflex® 521 Sika Sikaflex® 521 by Sika is a high-performance STP adhesive and sealant designed for industrial bonding and sealing applications. Based on Silyl Terminated Polymer technology, it delivers excellent multi-material adhesion on metal, aluminum, plastics, wood, and glass—often without primer. With strong UV and weather resistance, it is ideal for panel bonding, vehicle body assembly, container manufacturing, HVAC systems, and metal fabrication. Low odor, solvent-free, and paintable, this versatile adhesive sealant provides durable, flexible, and reliable performance for demanding industrial environments. Learn more
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
Mastic-colle PU Sikaflex® 221 Sika Sikaflex® 221 by Sika is a versatile polyurethane (PU) adhesive sealant designed for bonding and sealing in industrial, automotive, and construction applications. It delivers strong adhesion to metal, aluminum, painted steel, wood, ceramics, and plastics, making it ideal for panel bonding, equipment installation, body joint sealing, container assembly, HVAC systems, and metal structures. With good resistance to vibration and everyday mechanical stress, it ensures durable and flexible performance. Easy to apply and paintable after curing, this PU adhesive is a reliable solution for professionals seeking efficient, long-lasting bonding and sealing. Learn more