Over time, you'll likely need to replace the gasket on your smoker. Our gasket kits include enough gasket for the smoker door plus the firebox door. Replacement instructions are included in the shipment. Our factory gasket material is a full 1" wide x 1/4" thick self-adhesive grey felt stove gasket, 1 1/2" wide for the MEMPHIS, however we also offer Rutland rope gasket (see separate listing).