OATEY 42778 3 in. or 4 in. Stainless Steel Closet Flange Ring

Both. The 42778 stainless steel closet flange ring is made for use on either 3 inch or 4 inch toilet flanges, so one part covers the two pipe sizes you'll meet under a residential or commercial water closet. It has a 7.01 inch outside diameter and sits over the existing flange body rather than replacing the pipe connection.

That's exactly what the Oatey 42778 ring is for. It replaces broken, rusted or corroded metal toilet flange rings, so you leave the flange body and the pipe connection alone and just restore the part that holds the closet bolts. For a property manager or maintenance tech, that turns a pipe repair into a bolt-down repair.

It is a repair ring, not a flange. The 42778 has no pipe hub and does not connect to the drain line, it is a 7.01 inch O.D. stainless ring with two closet bolt slots that lays over an existing 3 inch or 4 inch flange. If the flange body itself is cracked or the pipe connection is leaking, a ring will not fix it and you need a replacement closet flange instead.

Six countersunk holes take screws into the floor, and the countersink keeps the heads flush so the toilet base and wax ring seat flat. Fasteners are not part of the package, so pick screws to suit the subfloor you're anchoring into, wood screws for plywood, masonry anchors for a slab.

Two closet bolt slots are built into the ring, which is what lets it take over from a failed flange ring and hold the toilet down. The slots accept standard closet bolts; the bolts themselves and the wax ring are separate items you'll want on the truck before you pull the fixture.

Stainless steel construction is the point of the 42778. The rings that fail are usually plain or plated steel that rusts where water sits around the base of the toilet, and stainless resists that. In a bathroom that has already eaten one ring, or in high-traffic multi-family and hospitality restrooms, that is the reason to spend on this repair part instead of the cheaper plated version.

The ring stacks on top of the existing flange, so the bolt seat rises by the thickness of the ring and the wax seal has to make up that much less height. On a flange that is already sitting proud of a tiled floor, check your wax ring choice, a standard wax may be all you need where an extra-thick one was required before.

Order Oatey 42778. That is the manufacturer part number for the stainless steel closet flange ring with a 7.01 inch outside diameter, six countersunk mounting holes and two closet bolt slots, suited to 3 inch and 4 inch flanges.