Instead, it can be installed above the broken toilet flange with four screws and silicone sealant. A product like this makes repairs easy, because it doesn’t require solvent cementing or any special tools to install. If just the flange is broken, you can use a convenient flange repair ring to securely reinstall the toilet. Best practices when repairing a broken flange
A mechanical test plug fits inside of the flange and has a gasket that is expanded with a wing nut, providing an airtight/watertight seal. If you’re remodeling a bathroom and keeping the existing flange, a mechanical test plug will be the best option to keep sewer gases from escaping while work is being completed.
