The Frigidaire 218730603 white door gasket creates a tight refrigerator door seal that supports consistent cooling and reduces cold air loss. Designed as a replacement gasket, it fits around the refrigerator door to form a secure seal when the door is closed, limiting warm air from entering the cabinet. Its flexible, durable material provides a reliable fit for regular household use while supporting proper door alignment. Replacing a worn, cracked, or loose gasket improves temperature retention, reduces unnecessary energy use, and keeps stored food under stable cooling conditions.