Place the new gasket in a bucket filled with hot water, which softens the rubber, making it easier to install in the dishwasher. Allow the gasket to remain in the water for several minutes.
Open the dishwasher door, and then grasp the bottom of the door gasket.
Pull the gasket away from the gasket channel until it is removed from the dishwasher. Discard the old gasket.
Remove the new gasket from the hot water, and locate the center of the gasket. The center of the gasket is indicated on the gasket itself by a red dot.
Align the gasket with the door latch at the top of the wash tub, and press the gasket into the gasket channel at that point. Starting at that central point, press the gasket into the channel around the entire wash tub, using your fingers, until the gasket is fully inserted.
Close and latch the dishwasher door. Allow it to remain closed for several hours, which allows the gasket to mold to the gasket channel.