Hercules Plastic Seal is a polyurethane sealant designed for any task. deal for caulking cast iron soil pipes with oakum, it offers a fast-curing, waterproof solution suitable for any environment. Use it on frame openings, ductwork, wood, masonry, and more. Designed for home and professional use-from construction to marine-this odorless, crack-proof sealant bonds with a variety of surfaces including plastic, wood, and metal. Its air-drying formula means quick fixes with layer efficiency. Eco-friendly with 0% VOC, Hercules Plastic Seal delivers robust performance without harmful chemicals. Behold the power of Hercules, products built to last and trusted by plumbers to withstand even the toughest conditions.