I've replaced rings many times. Some have fallen out again, others have stayed put for years.

Some rod building places used to sell just rings- I'm not sure these days.

Get a guide with a matching ring. Cut the metal off with a saw or dremel. Clean and roughen both surfaces before gluing. Try super glue for quickness, but a good quick-set epoxy may well hold better. You'll be back on the water in 15 minutes! cool
_________________________
"It's NOT that much farther than the Cowlitz!"

"I fish, therefore someone else must tend the cooler!"