This is a FUS804 Sprayable Seam Sealer. Sprayable Seam Sealer & Sound Deadener, 10.5oz Any scuffed primed surface including metal & SMC/fiberglass. Create flexible textured seams including floor pan seams, trunk pan seams, strut tower seams, exterior & trunk box seams. Restore rocker panel chip guard texture & trunk area texture. Duplicate OEM sound ening material on interior surfaces of floor plans. Gray. Paintable immediately. Remains flexible.