Seal your smoking chamber or firebox with the Oklahoma Joe's gasket seal. Measuring 15-feet in length, you can count on this to prevent smoke from leaking out of your smoke chamber or firebox, while withstanding intense heat. The length can be cut to fit smoker. Made of fiber-wool material that withstands high temperatures. Dimensions: 1 In. W. x 15 Ft. L. Material: Fiber-Wool