Old flange is gone - rusted out

[ladmo19013]

Old lady here trying to do her own DIY repair. So I need it to be as simple as possible! I need to replace a toilet flange. Apparently the old one rusted out. I see the Set-Rite extension kits, but they install then over the existing flange. I have a ABS drain - inside diameter is 3 3/4", outside diameter is 4 1/4". It is in a concrete slab floor. and tile has been installed. I'm seeing different posts about new flanges being level with floor and some that say above the floor. The concrete floor around the drain is pretty uneven. I would prefer to install one on the inside of ABS drain if possible. I'm just not sure what I need to do with the uneven concrete all around the drain before I even try to install the flange. Here are some pictures.

 

[Geofd]

You can buy a split stainless steel flange that will replace what was there,home depot or Lowes think oatley makes it
Was there a metal ring attached to the abs???

 

[ladmo19013]

I believe so originally.
I don't see that there is a lip on by ABS drain pipe that I can fit a split stainless steel flange to. So not sure how I would attach it.

 

[Geofd]

Yes, maybe a thicker wax ring alsomake sure bother are anchored withe stainless material or, concrete tapcons.

 

[Twowaxhack]

Looks like you need a complete flange and it needs to be raised.

You could try DIY but it’s not a beginners job. Often I bring in a box full of possible parts and only use one.......

You’ll need the entire flange with spigot attached or a hub. I’m not sure from the pics.

You’ll need to raise the flange to we’re the bottom of the flange is sitting even with the top of the finished flooring.

Piping appears to be ABS plastic. So you’ll need to solvent weld in the new flange with spigot or hub.

That means the thickness of the flange portion will be sitting above the finished flooring.

This will create a void in your floor under the flange. Fill this void with hydraulic cement. Then drill holes and anchor the new flange to the floor.