The Outer Door Seal is an OEM replacement part for LG dishwasher doors. Situated around the door opening, it creates a tight seal when closed to contain moisture, heat, and germs within the wash chamber. Proper door sealing is essential for sanitization, drying performance, and protection of surrounding cabinetry. Causes can be deterioration of sealing material over extended use, cracks or deformities allowing passage of water and air, or damage from closing force on the rigid door. Symptoms of a bad seal include: Visible leaks and water damage around the door interior and exterior Door failing to seal fully shut Musty odors escaping from uncontained air inside This OEM LG part is also compatible with some Sears/Kenmore dishwashers.Part Number 3920DD3002B (AP5590231) replaces 1914835, 3920DD3002A, AH3575441, EA3575441, PS3575441.