LASCO 04-3310 Toilet Bowl Wax Ring with Polyethylene Flange for 3-Inch and 4-Inch Waste Line - - Amazon.com
Amazon.com: Toilet Wax Ring Seal Replacement Kit with Flange and Bolts– Bowl Gasket Seal with Brass Bolts – Polyurethane Extender- Compatible with 3 and 4 inch Drain Opening - for New Installation
If toilet isn't sitting pretty, air can be pretty foul; faulty seal can let gas escape - mlive.com
Wax Free Toilet Seal Kit with Hardware | Wax Free Gaskets | Korky Toilet Parts