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Kohler K-1203764 Canister Dual Side Flush Seal

Kohler K-1203764 Canister Dual Side Flush Seal

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“Just before an event, we had a 9 7/8" round drain cover snap in half. It was an odd size and Noel's was the only place that seemed to have one that would fit. We couldn't leave the hole exposed during the event, and Noel's was kind enough to make sure it was overnighted to us. Their effort was truly appreciated and the cover fit perfectly! I highly recommend them! ”
-Linda C.
03/27/2026

$8.47

 

The Kohler K-1203764 is a genuine replacement Canister Dual-Flush Valve Seal designed to prevent leaks and maintain optimal performance in specific Kohler toilet models. This flat silicone or rubber gasket is a critical part for dual-flush systems, particularly when the toilet begins to run continuously or leak between the tank and the bowl.

We can ship anywhere the US Postal Service ships. For orders being shipped outside the US, please contact us at (888) ASK-NOEL, noelsplumbingsupply@fuse.net, or via the text widget on this screen.

SKU: 12752a Category: Tag:

Stop that running toilet instantly with the Kohler K-1203764 Genuine Seal Kit. Engineered specifically for Kohler canister-style dual-flush systems, this premium silicone seal ensures a watertight, leak-free connection, restoring your toilet to peak efficiency.

 

K-1203764

 

  • Kohler GENUINE Part
  • Engineered to promote product longevity
  • Made with premium materials for enhanced durability

Common questions about this product

Is this item the original manufacturer's recommended replacement part? chevron-icon

Yes, this is the OEM recommended part.

Is this the correct item for my application? chevron-icon

If you’re not sure text us a picture 1-888-275-6635 or email us a picture at noelsplumbingsupply@fuse.net.

 

We will make sure you have the right part.

 

 

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-Danielle E.
03/25/2026
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