DURAVIT Flush Valve Gasket, Series: 100297, For Use With: 213001/087230 1930 Series, 212601/0931200005/212651/2123010005/2123510005 Darling New, 0112010062/0929100005 Happy D., 0163010005/213301/213351 Starck 2, 210301 Vero Single Flush 1-Piece/2-Piece Toilet and Geberit Flush valve