LASCO Toilet Bowl Extra Thick Wax Ring with Brass Bolts Reinforced Urethane Core and Polyethylene Flange #35B extra thick toilet bowl wax gasket with brass Bolts for floor mount toilets Polyethylene flange fits 3-inch and 4-inch waste line Forms a gas, odor and water tight seal between toilet bowl and waste line Easy installation Polyethylene sleeve ensures strong seal and proper positioning of gasket on 3-inch and 4-inch drain opening