The gooey red insulating stuff is still for sale! www.grainger.com sells a red insulating varnish in a spray can no less. I have a couple of cans of it and it seems to keep fairly well. My cans are labeled: Dayton DEM-kote, class F red insulating varnish. I think Grainger has absorbed Dayton Electric Mfg Co but it looks like they're selling the same stuff. 73, Rudy