MS adhesive, also known as MS polymer or silyl‑modified polymer adhesive, is a versatile, elastic bonding and sealing material that combines the strengths of silicone and polyurethane technologies. It cures by reacting with moisture in the air, forming a strong yet flexible bond without shrinking or releasing harmful by‑products. MS adhesives are commonly used in construction, automotive, marine, and industrial applications for bonding and sealing materials such as metals, glass, plastics, concrete, and wood. They are valued for their excellent adhesion without primers, high weather and UV resistance, paintability, and low VOC content, making them suitable for both interior and exterior use where durability, flexibility, and environmental considerations are important.