These are my crossovers, and here is a little more background info.The zip ties are not overly tight and not causing any squeezing of the caps. the crossovers have never been subject to more than one or two watts of power. Room temperature is a constant 74 degrees.The substance is gooey/sticky feeling, not solid. all 4 caps are experiencing this, on both ends. It doesn't affect the sound any.
The only reason I even noticed this is because I swapped out the crossovers for another set I had for comparison. I'm not really concerned at this point, just curious. I plan on putting the crossovers back in without cleaning them up and see if the "oozing" gets worse.