Description  Flush Valve Gasket (3.5 inch x 2.1 inch) (89mm x 53mm) 89mm x 53mm 3.5 inch Outer Diameter x 2.1 inch Inner Diameter 3.1 inch (78mm) Inner Lip 1.15 in or 29mm Tall Replacement for American Standard 2 inch Gasket (34602-0700 Tank-to-Bowl Gasket) Fits two piece toilets Sits between toilet tank and base to protect porcelain Fits Flush Valve. FLUSH VALVE NOT INCLUDED Compatible with some American Standard Models: Glenwall ( #2094.050 Tank # 4049), Compton ( #2116 – Tank #4043, #4049), Cadet (#2109.056 – Tank #4049.052), Roma ( #2012.014, #2080.018, #2009.017, #2009.115 (with vent-away) – #2009.026, #2009.125 (with out vent-away), Retrospect (#2405.016 & 2408.016 / Tank #4393.016) Compatible with some Mansfield Models: Alto (125, 160, 161, 165, 170, 171, 172, 173, 174, 175, 180, 181, 190, 395, 3120, 3121, 3122, 3125, 3172, 3173, 3174), Aleur (163/163NS), Dominion (127), Easton (392), Nottingham (WC6002), Elm Ridge/ Bar Harbor (011, 021, 026), Protector (3260), Romanesque (192), and Wave (189)