American Standard Screw on Disc | Noels Plumbing Supply

“American Standard 7381043-400.0070A HET 1.28 GPF Flapper Assembly” has been added to your cart. View cart

Black rubber disc with bright brass threaded nut.

WHAT OUR CUSTOMERS SAY…

“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

$5.87

The American Standard 73383-07, 73383-0700 or 73383-0700A is a replacement rubber seat disc designed for American Standard tilt-style toilet flush valves.

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

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Crafted from heavy-duty, flexible premium rubber, this 3-inch replacement flush valve seal stops leaks right at the source. Thanks to its smart screw-on design, the seal disc actively pivots against the tilt-valve base to guarantee a perfect drop-in alignment with every single flush. The tool-free, screw-on design means you can easily thread off your hardened, old seal and snap this replacement disc directly onto the actuating unit within minutes.

73383-07 1022.27

Features a rubber disc with a brass threaded socket for screw-on installation.
Designed to fit small American Standard tilt flush valves and actuating units, specifically replacing part numbers like 73383-0700A.

Customer submitted image.