On Sun, 21 Oct 2018 13:39:58 -0400, Scott Dorsey wrote:

A decade ago I'd have recommended doing that, but I don't think you can
buy Sprague Orange Drops anymore. They were the standard replacement
types for those applications for many many years. Now, I guess I would
suggest the Panasonic sputtered mylars from digi-key, or the xicon
sputtered mylars.

Antique Electronic Supply is still selling Orange Drops but they're being
made by someone else now. Vishay? CDE? I'm not sure. But they're
supposed to be the same as Sprague Orange drops.

Those Chinese yellow capacitors seem to be clones of the old Sprague
yellow jackets. I've used them and they've worked fine for me, although
some other people report problems. I did catch a leaker when I was
testing a batch a few years ago.

I've never had a problem with the brown Panasonics from Digi-Key and they
would be my go-to cap if wanted some brand name confidence.