The Cap Fill is a small but essential component used to securely seal and protect the fill or opening ports in various appliances, such as dishwashers, washing machines, and refrigerators. Typically used in rinse aid dispensers, detergent compartments, or water reservoirs, the cap ensures that liquids remain safely contained, preventing spills, leaks, and contamination. A damaged or missing cap fill can compromise the performance of your appliance, making it necessary to replace for proper functionality.