LASCO 04-3326 Cushion Ring, for Wall Hung Toilet, 5 3/8-OD x 3 1/2-ID x 3/4-Inch Thick, Sponge Rubber Toilet bowl sponge rubber cushion ring 5 3/8 OD x 3 1/2 ID x 3/4-inch Thick, Round Wax free toilet installation Forms a gas, odor and water tight seal between toilet bowl and waste line Easy installation