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Re: Mineral Oil Source - drying wet oil



Tesla List wrote:
> 
> Original Poster: "Reinhard Walter Buchner" <rw.buchner-at-verbund-dot-net>
> 
> Hi Jim,all
> 
> >Original Poster: Jim Lux <jimlux-at-jpl.nasa.gov>
> >
> Of course I know you didnīt mean this last idea all too seriously, but
> just in case anyone DOES try it:
> 
> The oil will collect water again over time (from the atmosphere), unless
> you seal your cap absolutely air tight (meaning a big BOOM if it fails
> internally).
> 
> Now on the serious side. I had designed my PE cap (before I went
> MMC). My main pointers on casing construction were:
> 
> This setup was designed to:
> a.) Prevent air from entering the caps.
> b.) To allow the oil to expand and contract during a run
>       w/o sucking in air or water (vapor).
> c.) The silica gel keeps water out of the xformer oil.
> 

I notice that the commercial oil filled caps use dry oil (dried, I know
not how), and are solder or crimp sealed off after filling under a
vacuum. In fact, the sound of "glugging" if you move it is a sign that
the cap has leaked and should be discarded.