The Whirlpool WPW10443311 Refrigerator Door Gasket helps maintain a proper seal to keep cold air inside the refrigerator. This component is a flexible replacement gasket designed to fit around the door edge, creating an airtight barrier when the door is closed. It works by compressing against the cabinet frame, preventing warm air from entering and reducing temperature fluctuations. By supporting consistent internal cooling, it helps improve energy efficiency and preserves food freshness. The material is designed for durability under regular use, and replacing a worn or damaged gasket can help restore proper sealing performance and reduce strain on the appliance’s cooling system.