The Danco HydroStop is a replacement toilet flapper for common 2-inch or 3-inch toilet applications. It seals the flush valve opening to prevent tank leaks, ghost flushing, and water waste, while restoring a full flush when the handle is pressed. This HydroStop version is positioned as a value upgrade for routine toilet maintenance.
Will this flapper stop a running toilet?
If the running toilet is caused by water leaking past a worn flapper, replacing the flapper is usually the correct fix. A new flapper should seal the flush valve opening and stop slow tank loss that causes periodic refills. If the valve seat is damaged or the chain is adjusted incorrectly, you may still need additional repair.
How do I confirm the flapper size?
Check your existing flapper and the flush valve opening before ordering. Many toilets use either a 2-inch or 3-inch flapper, and brand-specific designs can vary even within the same nominal size. Matching the brand named in the listing and measuring the opening will prevent the most common fit issue.
How long does a replacement flapper usually last?
Service life depends heavily on water quality and tank chemicals. In normal use, a flapper can last for years, but hard water, chlorine, and in-tank cleaners can shorten rubber life and cause early leaking. Periodic inspection is a good idea if the toilet starts refilling on its own.
# FLT231 HydroStop Toilet Tank Flapperless Alternative **Model:** `HydroStop` **Brand:** Danco **Category:** Toilet Flapper > The Danco HydroStop is a replacement toilet flapper for common 2-inch or 3-inch toilet applications. It seals the flush valve opening to prevent tank leaks, ghost flushing, and water waste, while restoring a full flush when the handle is pressed. This HydroStop version is positioned as a value upgrade for routine toilet maintenance. ## Specifications | Attribute | Value | |---|---| | Type | Toilet flapper | ## What's Included - Toilet flapper - Chain - Hook Source: https://www.jaspecs.com/danco/toilet-flapper/hydrostop-toilet-tank-flapper-alternative-toilet-repair-kit-flt231t/