You may be interested in these products
Korky 2003FR Flush Valve Repair Kit, Rubber, Black/Red
Korky 54 Toilet Flapper, Rubber, For: 2 in Plastic Flush Valves
Korky 2001FR Toilet Flapper, Specifications: 2 in Size, Rubber, Red, For: 2 in Opening Flush Valve Toilet