Limited Time Sale$7.40 cheaper than the new price!!
| Management number | 204749611 | Release Date | 2025/10/21 | List Price | $11.09 | Model Number | 204749611 | ||
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Flappers are the leading source of leaks in toilets, leaking as much as 200 gallons of water per day. Installing the wrong flapper can silently waste up to 4 gallons of water per flush. MJSI's line of flappers are engineered to ensure water-tight seals even under harsh in-tank conditions.
The HydroStop is a radical new approach to sealing toilets after a flush. Replacing flimsy rubber flappers with a sturdy tower, the HydroStop is engineered to eliminate the most common toilet problems. Unlike the angled, floating close of a flapper, the HydroStop drops vertically and solidly onto the flush valve opening to create a better seal and eliminate the possibility of leaks. The USEPA estimates that 20% of all toilets leak up to 200 gallons of water a day, mostly because of faulty flappers.
While ordinary flappers are connected to the handle with a thin chain that is subject improper tension tangles and breakage, the HydroStop features a durable stainless steel cable that is stronger, lasts longer and is less likely to break.
The HydroStop also features patented S.T.O.P. Technology (Safe Toilet Overflow Protection) that helps prevent bowl overflows. In the event of a clog, lifting up on the handle immediately drops the HydroStop tower and closes the flush valve so that water does not continue to drain from the tank into the bowl.
Because the HydroStop is a superior alternative to flappers, it:

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