I have 4 American Standard Vormax one-piece toilets installed in new construction 5 years ago. Given their premium price, they don’t move solid waste quite as effectively as a basic toilet. Tech support has little to say about my excess reliance on a plunger. But, not my issue here for today.

The tank utilizes two silicone flappers. A package of 2 costs about $25. I’ve seen complaints in forums online about these flaps only lasting from a few months to a couple of years.  Recently, one toilet was leaking water from the the tank to the bowl.

I changed the flappers. The old ones look & feel like new, I can’t tell any difference. Guess I can thank my water softener. Nonetheless, the water is still leaking. I shut off the water supply. Checking the tank a few hours later, it was empty. So I’m losing anywhere from one to 3 gallons per hour. No water on floor.

Called tech support. They suggested the new flappers might be defective. I’m skeptical. Any thoughts? Thanks.