Retractable cap for a nozzle of a caulking tube retained in a caulking gun

An apparatus for capping a nozzle of a caulking tube retained in a caulking gun, the apparatus comprising:

• a. a housing portion affixed to a caulking gun, a cap portion, and a flexible cord with said housing portion having a housing front vertical wall and a housing rear vertical wall;
• b. said housing front vertical wall having a front vertical wall opening that leads into a housing interior chamber which contains a retraction mechanism that is affixed to a proximal end of said flexible cord;
• c. a distal end of said flexible cord affixed to a closed end of said cap portion, said cap portion having an opening leading to an interior chamber that is surrounded by a circumferential vertical wall with said closed end opposite to the opening;
• d. said interior chamber of said cap sized to receive said tip of said nozzle;
• e. wherein, in operation, the cap is pulled away from the retraction mechanism and placed over the tip of the nozzle, the pulling effect causing the retraction mechanism to be forced into tension, and when the cap is removed from the tip of the nozzle, the retraction mechanism causes the flexible cord to be pulled back into the housing so that the cap retracts to adjacent to the exterior of the housing.