SCIGRIP® MP100 Metal Primer is a surface treatment that is designed to clean, chemically convert and prepare stainless steel and aluminum surfaces1 for permanent bonding with SCIGRIP Methacrylate Structural Adhesives. It significantly improves the long-term durability of adhesive bonds that are subjected to humid or corrosive environments such as salt water or salt spray. Without MP100, certain SCIGRIP Structural Series Adhesives can lose bond strength over time when exposed to such conditions.