True or False: A gasket in a water tight door seals against the knife edge.

The statement is true because a gasket is specifically designed to create a seal by compressing against a surface, which in this case is the knife edge of a water-tight door. The purpose of the gasket is to prevent water from leaking through the joint formed when the door is closed. A knife edge provides a sharp contact point that can effectively compress the gasket material, enhancing the sealing capability and ensuring that the door maintains its watertight integrity under various conditions. The sealing mechanism relies on both the material properties of the gasket and the precision of the knife edge to achieve optimal sealing performance.