I think the ace hardware in Daleville has the glass. If not measure it, order it online. My wife does stained glass and when i was doing the boiler i bought a 12" or 18" piece and she cut it for me, can't recall the company but i also got the washers. Ebay has some 5/8 x 8" with the washers for about $17. Actually, if it's not broken, take it out, run a bottle brush through it, reinstall.