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Flush Valve Seal for Mansfield 630-4837 for 208/209 Series Toilets

Black rubber seal with tab openings.
Flush Valve Seal for Mansfield 630-4837 for 208/209 Series Toilets - Image 2
Flush Valve Seal for Mansfield 630-4837 for 208/209 Series Toilets - Image 3

chat iconWHAT 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

$5.47

 

The Mansfield 630-4837 is an old-style, black rubber flush valve diaphragm seal kit designed specifically for Mansfield #208 and #209 Watersaver flush valves. If your toilet is continuously running or leaking water from the tank into the bowl, replacing this seal is the standard fix.

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.

SKU: 13135 Category: Tag:

Stop your toilet from constantly running and eliminate costly water waste with the Mansfield 630-4837 Replacement Flush Valve Seal. Specifically engineered for older-style tower systems, this premium rubber diaphragm seal acts as a direct replacement component to restore your toilet’s optimal flushing performance.

 

208-209

 

  • Designed specifically to fit Mansfield Model 208 and 209 Watersaver flush valves.
  • Easy DIY’er Quick-fix design allows you to easily slip the replacement ring into the top groove of the valve tower.
  • Made from durable, high-quality rubber formulated to withstand frequent use and resist everyday wear.

 

Customer submitted image. 

 

Common questions about this product

Will this item replace the original OEM part? chevron-icon

Yes, this aftermarket part will replace your OEM 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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“Do you need a vintage plumbing part and nobody seems to be able to find it in your area? Save yourself time and hassle and go to Noel's Plumbing website. You can text them a photo of the part and they will find it in minutes and give you the link to order it, all at a competitive price. My plumbers seem incapable of doing this and hand the job off to me. What can you do? But Noel's always has the 1930s parts I need or the aftermarket part that will get the job done. If I need it fast I can get it in 2-3 days from them and they know exactly what they are doing. It's a good old-fashioned plumbing store with all the parts you could possibly need and people who know how to get them. The service is top level. The staff pick up the phone after one or two rings. They are polite and KNOWLEDGABLE. I'm so tired of dealing with folks who can't find a chicken in a hen house. LOL. ”
-Bry W.
06/23/2026
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