No. I just online chatted with a guy at a custom gasket place. He’ll have a quote for me tomorrow or Monday. Might be high price, we’ll see.
Try these guys; a few acres of surplus parts for everything from tank treads to Humvee parts. Jerry Can Gasket These are high quality rubber replacement gasket for military and blitz 5 gallon gas cans, and gas can spouts. Just the gasket, other piece not included. Gasket measures approx 3.5" in outer diameter and 2 3/16 inches inner hole diameter.
McMaster-Carr (McMaster-Carr) may have a gasket which fits. I have purchased a handful of gaskets and o-rings for various military vehicle projects.