US Stove Company Flue Collar Gasket (1/4″ X 6′). The flue collar gasket seals between the flue collar and the top of your unit. You should inspect this gasket on a regular basis. If the gasket is showing signs of deterioration and is not making a good seal it should be replaced! A damaged gasket may allow smoke or embers to enter the room.
Genuine USSC Part