Oatey GIDDS-173390 43539 Replacement Flange Forcast Iron, 4 Inch, PVC

I was kinda nervous about this sealing into my old home floor pipe. The floor pipe isnt perfect round, it has bulges and dents, but this sealed. I YouTubed the installation so I had a lot of faith in how to do it.

Lifesaver. I had an old (from 1962) cast iron pipe in a slab floor and the old flange was long gone. This went right in, sealed up nice and tight and toilet flushes great.

I have travertine tile installed over the original slab. I DIY and the original iron flange finally rusted through. The original contractor (1968) just chipped away the slab and mortared and grouted to fiil and seal around and under the iron flange. Pretty sloppy work. Removing the original flange was impossible. I scrapped off the rust inside the drainpipe - an easy process with a chisel or screwdriver. I dropped the Oatey Flange, tightened the screws, the Oatey expanded to make a tight waterproof seal inside the drainpipe and everything went perfectly - it literally took me under 10 minutes! I sealed with silicone, dropped on a wax seal, replaced the toilet. PERFECT and FAST. When my other toilets go, this is definitely the only solution.

This product is an absolute godsend. Works exactly as described. Saved me hundred of dollars, avoiding the necessity to call in a plumber. Thank you!

I am currently remodeling my bathroom and had to remove the toilet for the new tile installation. Once the toilet was removed it was revealed to have a old, rusted, and almost broken cast iron flange. It was ready to be replaced. I did my research online and decided to go with this simple replacement rather than call a plumber to install a new cast iron flange which I would assume would cost hundreds of dollars. Once I was able to chisel and hammer out the old cast iron flange, I took a wire brush and cleaned the inside pipe of any rust and debris from it(wear a mask for this part). Once the pipe was cleaned up, this flange slid right into place, no problem. I tightened up the screws that held it place very securely, added my extra large wax ring and installed the toilet with no problem. I also caulked around the base of the toilet for added protection against leaks and any movement of the toilet.

I am so glad they make a fitting that works on cast iron.

There are a couple different styles of this contraption, and I like this version the best. The toilet gasket I was replacing (cracked) was mounted on a concrete slab, so working from the underneath wasnt feasible. The hardest part was heating the old flange just enough to pull it out, without damaging the PVC pipe which is left behind. Another version works by twisting the flange on a rubber gasket. As the flange is twisted, the rubber gasket is forced to expand and creates a seal. This version, however, works by crunching the rubber gasket, forcing it to expand. This is far superior as you can correctly lay the orientation of the flange, then tighten the gasket as necessary without turning the orientation. I believe this version requires an allen to tighten the flange, which isnt always ideal for those without every shape tool in their inventory.

Seems like a solid product but did not fit my cast iron 4 inch pipe. I had the same issue as another reviewer Mike Erdman. I tried everything from lubricant, shaving off some plastic, and grinding out all the rust back to the shiny iron and still it would not fit. At that point it was so beat up I could not return it. Ended up getting the Sioux Chief 4 in. PVC DWV Gasket Closet Flange from Home Depot which worked perfectly. My advice- Try fitting it in and if you get any resistance, dont bother, just return it and try something else. My waste line was over 50 years old and the slab concrete over time had compressed the pipe where the old iron flange had been making this product impossible to install.

This piece really seemed to be perfect for my particular application, where the person who lived in this house previous (and it is an old 1930s era house) had really done a number on installing the old toilet. When I pulled the old one off (made in 67..finally had the tank crack and flood the bathroom), there was no flange of any kind. The guy had used the lead-trick on top of the iron pipe to form a flange...the bolts for the bowl were screwed down into the floor..and of course broke off when I removed the nuts. SO...after much research, and really good reviews on this piece, I ordered it. It fit into the 4 pipe quite well and snugged down very nicely on my practice try...maybe a mistake, because one of the nuts somehow cross-threaded, I think, and I couldnt get it to go either way. So when I went to do the install, I could not tighten all 3 allen-screws down like I wanted. At any rate, I was able to put 3 really nice long wood screws into the floor to secure the flange, and the new toilet fit on it perfectly...level...and we are off and running...well...off and something!!

It’s works perfectly and very easy!