Chuck Harris wrote on 4/3/2020 10:48 AM:
Unfortunately, it doesn't always work that way.<snip>
IIRC, at one of my former employer's facility, the solder flux-remover solvent in use at the time attacked
conventional electrolytics' rubber end seals. The epoxy end seals prevented the damage
but those capacitors were more expensive. Again IIRC, the PC-board manufacturing process changed to
a different flux and solvent that didn't attack the rubber end seals.