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Your cart is empty.Black Swan No-Hub Sealant is an amber colored, smooth flowing, semi-viscous liquid for use as a coating on black pipe to improve leak-free sealing of no-hub couplings. The high performance polymer resin compound is elastic and resists vibration and temperature change. It is a fast drying sealant that cures by solvent evaporation resulting in an elastic membrane that adheres to both pipe and coupling gasket, providing a flexible adherent membrane coating. Gaskets on nonporous surfaces may be taken apart at anytime without injury to sealed surface. Temperature range use from -65ºF to 400ºF (continuous use). May be used on aluminum, brass, steels, copper, epoxies, plated metal, fiberglass, black pipe, galvanized pipe, glass, wood, paper, felt and cork. Should not be applied on painted surfaces, or plastic pipes, such as PVC, CPVC, or ABS. Resistant to: Motor oils, hydraulic fluids, water, steam, diesel fuel oils, aviation fuels, aliphatic solvents (petroleum distillates), antifreeze, and gasoline. Conforms to MIL-S-45180D.
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Reviewed in the United States on September 3, 2017
We recently installed a bathroom with all new cast iron pipe and heavy-duty 4-band Husky no-hub couplings. When we flood tested the system, all of the no-hubs leaked due to the imperfections in the sides of the cast iron pipe. After buying this product, we removed each no-hub, applied the Black Swan sealant, and tightened them back up. 15 minutes later we flood tested the system again... and no leaks! It is a yellowish-clear color, has no bad odor, and was pretty easy to clean up. That was my first time ever installing cast iron, and I couldn't have done it without this product.
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