2″ Toilet Flapper for Gerber Viper/Maxwell 1.6 GPF

Stop the annoyance of a constantly running toilet with this **direct-fit 2″ rubber flapper** designed specifically for Gerber Viper and Maxwell 1.6 GPF gravity-fed toilet tanks. Engineered to replace worn, cracked, or hardened flappers, this replacement eliminates phantom flushes, slow water leaks, and the noise of continuous tank refilling—restoring your toilet’s efficiency and quiet operation.

Built with a **chlorine-resistant rubber elastomer** and a **rust-resistant stainless steel beaded chain**, this flapper is engineered to withstand treated tap water, hard mineral buildup, and frequent flush cycles without degrading. It’s a precise match for Gerber’s Maxwell (models 28-990, 21-972, 28-980, 21-900) and Viper (models 28-590, 21-512, 21-518, 28-599) tanks, as well as AquaSaver models (28-970). No adjustments or modifications are needed—simply install and enjoy leak-free performance.