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Red rubber toilet flapper for Cadet III toilets

Korky

Korky 3040BP Toilet Flapper Red Cadet III

SKU CH-DARX-HB9MB

Rubber toilet flapper resists chlorine and seals the tank on American Standard Cadet III toilets

  • Resists chlorine for longer seal life
  • Forms a reliable water seal in the tank
  • Designed for American Standard Cadet III toilets
  • Red rubber construction identifies the correct fit
  • Backed by a five-year warranty

Korky 3040BP Red Cadet III Flapper

This Korky 3040BP toilet flapper is a replacement seal designed for American Standard Cadet III toilets. Its red rubber construction resists chlorine degradation to maintain a reliable tank water seal. The part is sold new and carries a five-year warranty from the manufacturer.

Fits American Standard Cadet III models only

This flapper suits homeowners or plumbers repairing a Cadet III toilet with a worn or leaking seal. It will not fit other American Standard lines or toilets from different brands, so buyers needing a universal or adjustable flapper should look at a different product.

Chlorine-resistant rubber holds seal over time

The rubber material is formulated to withstand chlorinated water without cracking or warping during continuous immersion. This helps the flapper keep a consistent seal through repeated flush cycles rather than degrading quickly in harsh water conditions.

Highlights

  • Resists chlorine for longer seal life
  • Forms a reliable water seal in the tank
  • Designed for American Standard Cadet III toilets
  • Red rubber construction identifies the correct fit
  • Backed by a five-year warranty

Specifications

BrandKORKY

Questions about this item

What type of toilet must I already have for this Korky 3040BP flapper to fit?

It fits American Standard Cadet III toilets, forming the tank water seal with its red rubber construction that resists chlorine.

Will this flapper work if my tank uses an older flush-valve design instead of the Cadet III system?

The flapper is made specifically for the Cadet III flush valve, so an older valve design will not create a proper seal with this part.

How can I confirm the flapper is sealing correctly once installed?

After installation, flush the toilet and watch the tank refill; the water should stop cleanly at the fill line with no continuous trickle into the bowl.

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