FWIW, I think Fel Pro 5019 is what you are looking for. It's the rubberized cork gasket normally associated with the glass bowl. I couldn't find anything like a neoprene gasket that looks like what you pictured. Perhaps another Bolter knows of such a part number???
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
