SEAL ACTIVE WATER LEAKS IN CONDUIT & DUCTS WITH CABLE IN IT! Seals Flowing & High Pressure Water Leaks Instantly Bonds to Metal, Concrete, Wood & Plastics Seal Pipe Penetration, Conduits & Ducts! Seals holes and wide cracks in concrete! Also seals sewer gases & rodent pathways NO ODOR FORMULA & NON-TOXIC! ENVIRONMENTALLY SAFE ! NON-FLAMMABLE ! Seal Conduits, Ducts, Manhole, Risers, Rodent Pathways. Active water leaks.