The Tub Gasket is an OEM part for Frigidaire dishwashers. It is designed to create a waterproof seal between the dishwasher tub and door, preventing leaks during the wash cycle. This gasket ensures that water remains contained within the dishwasher, enhancing its cleaning efficiency and protecting your kitchen from water damage. Causes of a bad tub gasket can include wear and tear over time, accumulation of debris that can degrade the material, or damage from improperly closed dishwasher doors.