Description Flush Valve Gasket (4.2 inch x 3.1 inch) (106mm x 78mm) 106mm x 78mm 4.2 inch Outer Diameter x 3.1 inch Inner Diameter .4 inch or 10mm Tall Fits Flush Valves for Two Piece Toilets Wet Gasket Fits Flush Valves. FLUSH VALVE NOT INCLUDED