Turn off the electrical power to your Bosch dishwasher from the kitchen circuit breaker.
Open the dishwasher door. Remove the six Torx T20 screws on the inside of the door using a screwdriver fitted with a Torx T20 bit.
Close the door again and lift the bottom panel toward you. Pull it off of the unit and set it aside.
Slide off the outer panel and set it aside. Remove the screws holding the bottom seal to the dishwasher.
Insert a putty knife into the bottom door seal and pry it out of the appliance.
Insert the new bottom seal into the same position of the bottom lining of the dishwasher.
Reinsert the the screws into the bottom seal and place the outer panel back onto the door.
Place the bottom panel back on, then open the dishwasher door. Reinsert the six Torx-20 Torx screws into the inside panel.
Turn the power supply back on from the kitchen circuit breaker.