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Red rubber flush valve seal kit with two seals for 3-inch toilets

Korky

Korky 435BP Flush Valve Seal Kit 3 In toilet accessory

SKU CH-SG9H-SHDAY

Flush valve seal kit includes two rubber seals for Kohler Class Five, Class Six and American Standard Champion 3 toilets

  • TypeRegular
  • Resists chlorine for longer seal life
  • Fits Kohler Class Five and Six toilets
  • Fits American Standard Champion 3 models
  • Includes two seals for different flush valves
  • Backed by a five-year manufacturer warranty

Korky 435BP Flush Valve Seal Kit

This kit contains two rubber flush valve seals designed for 3-inch toilet flush valves. It fits Kohler Class Five and Class Six models along with American Standard Champion 3 toilets. The seals are coloured red and constructed from chlorine-resistant rubber. They are intended for homeowners or plumbers repairing a leaking flush valve on compatible toilet models.

Simple installation with two seal options

Installation involves removing the old seal and pressing the correct replacement into the flush valve opening. The kit supplies one seal for American Standard Champion 3 and another for Kohler Class Five and Six, so selecting the wrong seal for the specific toilet model is the most common error. No tools are typically required beyond shutting off the water supply and draining the tank.

Durable rubber resists chlorine degradation

The rubber material is formulated to resist chlorine commonly found in municipal water supplies, which helps the seal maintain flexibility and a tight seal over extended periods. Under sustained exposure to chlorinated water the seal continues to prevent tank-to-bowl leaks without hardening or cracking quickly. The manufacturer backs the kit with a five-year warranty.

Highlights

  • Resists chlorine for longer seal life
  • Fits Kohler Class Five and Six toilets
  • Fits American Standard Champion 3 models
  • Includes two seals for different flush valves
  • Backed by a five-year manufacturer warranty

Specifications

BrandKORKY
TypeRegular

Questions about this item

How can I confirm the 3-inch Korky 435BP seal is sealing properly after installation?

Flush the toilet and watch the tank refill; the water should stop cleanly at the fill line with no trickle or phantom flushes, confirming the rubber seal seats correctly on the Kohler Class Five or American Standard Champion 3 flush valve.

Which two seals are supplied in the Korky 435BP kit and what must I provide myself?

The pack includes one red rubber seal for American Standard Champion 3 and one for Kohler Class Five and Six; you only need basic hand tools and the existing flush valve — no extra parts are required.

How do I decide between the two Korky 435BP seals for my 3-inch flush valve?

Match the seal to your toilet brand: use the Kohler-labelled seal for Kohler Class Five or Class Six models, and the American Standard-labelled seal for Champion 3 models.

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