Early last year, I bought a capacitor bank and diode bridge at the hamfest, purely because it was very inexpensive and was rated at 2.5KV. Just got it out and started cleaning it off, and noticed that one capacitor looked a bit different.
The top and bottom of the can are bulged out.
The other two capacitors in the bank were not like this, the cans weren't damaged or distorted so I went ahead and trimmed the phenolic spacers down to get rid of a big crack in one, which removed one slot for a cap to go in.
But, it got me thinking-are these capacitors electrolytics, or oil capacitors? They're big enough to be either. The voltage rating had me convinced they were oil-types when I bough them, but the swelled can makes me think maybe not.
All three capacitors measure 36-37uF on the LCR meter, and the huge diode bridge they were hooked to checked out fine as well. It's just the bulged out can has me a bit worried about using that third one.