DAP Silicone Aquarium Sealant

Use to build or repair aquariums. Provides a waterproof and watertight seal. Harmless to fresh and saltwater fish when cured. Will not crack or shrink. Meets ASTM Specification C290, Class 25, Type S, Grade NS. Long-lasting 100% silicone rubber helps build and repair aquariums. Provides a waterproof, watertight seal. Stays flexible. Won’t crack or shrink. Non-toxic to fresh and saltwater fish when cured.