Quote:
Originally Posted by mark pirate
The best type are the Sprague metal clad type used in the 1940's.
I recapped a Pye D18T a while ago & removed several of these, I was amazed that most were still up to spec when tested!
All of the wax type failed...
Mark
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These were EX military high quality caps surplus to WW2 requirements. They would have been very expensive compared with paper types but were available cheaply in huge numbers during the immediate post war period. The TCC Visconol tubular range [not EHT] were a very close second but even these are leaky now especially in critical positions. J.