Korky 2000BP Toilet Flapper, Chlorazone Rubber, Red, For: Old 5 and 7 gal per Flush Toilets

The Korky Plus classic flapper is designed to stay open longer to fit old 5 and 7 gpf toilet models. The toilet flapper collar allows for attachment to brass flush valves and can be removed to fit plastic flush valves. The exclusive longest-lasting red rubber resists chlorine, bacteria, city water treatment, hard water and well water. Made of flexible rubber for a tight seal and easy-to-install.