Hinged inflatable gasket flood gates are permanently mounted, and offer a fully watertight seal. They can be designed to withstand water pressure from one or both sides, and offer a flush bottom sill similar to the lip seal gasket flood barriers. The gasket is inflated using a hand or foot pump, compressed air tank, bottled gas, or shop air. For cost savings, use dual inflatable gaskets for critical applications only. Care must be taken to maintain a clean sealing surface so as not to damage the gasket. Single and double panel designs are available for any size opening.