This is a SEM39537 Weld-Bound Adhesive. Bonds patch panels to steel, aluminum & galvanized steel. Fast-set acrylic does not leave an after-tack or waxy feel when finely cured, 7 oz cartridge. Dual-mix multi-purpose adhesive, fillers & sealers are the first choice for body shops nationwide. These products are essential in a growing number of automotive procedures, including the repair of plastic parts.