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3 1/2″ Flush Mount Mechanical Cleanout Repair Plug

Black plastic cover with stainles hex screw with black rubber seal.
3 1/2" Flush Mount Mechanical Cleanout Repair Plug - Image 2

chat iconWHAT OUR CUSTOMERS SAY…

“Fast, friendly, knowledgeable, hard to find items not carried by most big box stores. ”
-William S.
02/23/2026

$23.87

 

Specifically designed for use in cast-iron fittings where the threads have been damaged, the Test-Tite Flush Mechanical Cleanout Repair Plug restores functionality to cast-iron cleanout tees. This cleanout plug features an innovative design that creates a seal with the smooth surface behind the damaged threads to provide an airtight seal. Compatible with all brands of cast-iron fittings, this repair plug sits completely flush inside and out of the tee and cannot fall into the pipe. Once installed, it creates an airtight seal that holds up to 50 feet of backpressure. A stainless-steel flathead screw and wrench are included.

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: 983689 Category: Tag:

3 1/2″ Flush Mechanical Cleanout Repair Plug

 

  • Holds up to 50 feet of back pressure
  • Seals air tight (Does not rely on threads to seal.)
  • Back pressure actually increases sealing ability
  • Center is tapped for screw, and can be covered with cleanout cover
  • Completely flush inside and out
  • Stainless Steel flat head screw

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.

 

 

chat iconWHAT OUR CUSTOMERS SAY…

“I spent the balance of 3 days looking locallyfor a replacement head for our Kitchen sink...only to find these guys with an exact fit and finish and lower than market pricing...I immediately ordered (an awesome website with smooth cart checkout). 20 minutes later I find a blown out gasket/ring that I was able to replace, and avoid having to replace entire spray head. I text there support line ( while the store was closed!) Requesting the order to be canceled. Within minutes and without hesitation or questions they had refunded my card and canceled the order. They have one of the largest online inventories, notably stocking harder to locate stuff and boasting a separate text line dedicated to recieve customer pics of parts/gear to ensure we are getting exactly what we need. Enough said. Bring your future plumbing problems/needs here and trust you will be taken care of...I know I will... @ Noels, thanks for continuing a tradition of honorable business practice, in a world that is littered with allot less... ”
-John M.
03/14/2026