The PVC flange mounted inside a 4” waste pipe inside a concrete foundation was cracked. I watched every video I could and successfully removed the old flange and tailpiece. I intended to replace it with a Sioux Chief PVC/Stainless flange but on cementing and inserting it, the flange sat about ½ inch high on one side and I couldn’t get it level. I quickly removed it before the cement set. It also was a super tight fit. Next I inserted a Sioux Chief push tight gasketed flange in to the top of the tile floor and using tapcons set it tight. The dry fit seemed OK, so I set a new toilet with a wax ring. I believe the outlet horn is lightly riding on the flange. I placed a few shims near the back on each side and the toilet is steady and works as it should, but I am still nervous about it touching the flange. A friend suggested I get rid of the PVC flange and just screw a Sioux Chief stainless “Ringer” to the floor, set a wax ring, and discharge directly into the waste pipe. Any thoughts or suggestions from the experts?

Sure went through a lot of trouble with all you had to do to repair the cracks flange would be to purchase a flange repair kit. What you have done is turn a simple repair into a major hassle. The Sioux Chief stainless is a inside flange. Can you fit the flange tight to the floor? If so, cement it in and Tapcon it down, Good luck, Tom

Thanks for the lesson in humility. The Sioux Chief PVC/Stainless 4-3 flange would not fit to the floor since the waste pipe is out of plumb. The Push Tite flange mounted to the floor, has a shallow cup that makes contact with the horn. Can't lower the flange and don't want to raise the floor. I was simply asking if the Sioux Chief Ringer could be mounted on top of the finished floor without a flange so the horn would discharge directly into the 4 inch waste pipe. Regards...

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the waste pipe is out of plumb.

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If you're saying that the raiser is cocked then how did the toilet set in the first place? Was it shimmed? How bad is it cocked?

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I was simply asking if the Sioux Chief Ringer could be mounted on top of the finished floor without a flange so the horn would discharge directly into the 4 inch waste pipe

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The image of a Sioux Chief I saw was a inside fit wit a horn. That would still cock the flange.
OK! Here's what I would do.
I was setting toilets before flanges came out. All a flange does is secure the bowl to the floor.
Do this. Set the toilet over the pipe so it sets flat and the horn goes down into the sewer raiser. Mark the holes and pull the toilet away. Purchase a pack of 1/4" plastic inserts complete with screws and a 1/4" masenery bit. Drill the holes and install the inserts. You will also need to purchase a few wood screw type closet bolts,(see image) and a funnel type wax ring. Screw the closet bolts in and place the wax ring over the pipe. You may now set the toilet directly over the bolts and secure it to the floor. Good luck, Tom

You are correct. Both the 4-3 flange and the push tite are inside the pipe flanges. The original flange (all PVC) was off the floor about 1/4 inch on one side. I believe that is why it cracked. I couldn't get the new 4-3 flange down without it being 1/2 raised on one side, though that would have been the perfect flange if I could have made it work. The push tite has a smaller diameter tail piece. I'm guessing that is why it went in all the way to the floor, but the flange is a bit thick and cup depression too shallow. Will take your advice. Thanks.