I made a custom fuel tank that has a removable panel so I can service the foam inside and I need to make a gasket to seal the cover plate. Does anyone know where I can buy the cork gasket material to make my own gasket?

i have seen cork at the local parts store. try pep boys napa ect. or try some silicone or rubber sheet

Was at McFadden dale hardware this am. They had the sheets of cork and rubber, 4' wide.

I'll have to measure, but that may work. I work pretty close to one so I might stop by on Monday. Thanks

You can also try http://www.mcmaster.com . Type cork gasket sheets into the "Find" box. McMaster has EXCELLENT service and you always get what you order the next day, unless you order on a Friday, then you get it Monday.