Description Toilet Flush Valve Gasket (4.5 inch x 3.5 inch) (115mm x 89mm) 115mm x 89mm 4.5 inch Outer Diameter x 3.5 inch Inner Diameter .55 inch or 14mm Tall Fits Flush Valves for Two Piece Toilets Wet Gasket Fits Flush Valves. FLUSH VALVE NOT INCLUDED