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    Inside a Russian PIO coupling cap - photos ..

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    Bob Latino
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    Location : Massachusetts

    Inside a Russian PIO coupling cap - photos ..

    Post by Bob Latino on Sun Nov 28, 2010 1:45 pm



    I have used over 1000 of these Russian K40-Y PIO coupling caps in the past 5 years. Not one (to my knowlege) has ever failed. These are military grade capacitors made to very strict tolerances. They were made by Russia during the cold war in the late '70's to early '80's.

    I have often wondered what one looks like inside so today I took one apart for a closer look. They have plenty of "oil" on the inside impregnated into a heavy paper. I don't know what kind of oil it is but I did get some on my hands and found out that it did not wash off easily. The oil has no odor that I could detect. Inside the metal case is a thin cardboard that is used probably to insulate the inside of the cap from the outer metal case. Once this removed there appears to be a "jelly roll" of paper on the inside (the jelly) and a very thin sheet of aluminum foil on the outside (the roll). I cannot be sure that the metal is aluminum but it looks like aluminum. Whatever it is, it is non magnetic.

    Bob


    Last edited by Bob Latino on Tue Nov 30, 2010 5:14 pm; edited 4 times in total

    GP49

    Posts : 732
    Join date : 2009-04-30
    Location : East of the sun and west of the moon

    Re: Inside a Russian PIO coupling cap - photos ..

    Post by GP49 on Wed Mar 18, 2015 11:11 pm

    Shhhhhh! Don't let our EPA know, or they might BAN them.

    "I'm from the Government. I'm here to HELP you!"

    deepee99

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    Join date : 2012-05-23
    Location : Wallace, Idaho

    Re: Inside a Russian PIO coupling cap - photos ..

    Post by deepee99 on Thu Mar 19, 2015 12:04 pm

    GP49 wrote:Shhhhhh!  Don't let our EPA know, or they might BAN them.

    "I'm from the Government.  I'm here to HELP you!"

    That's a fact, Jack. The EPA has yet to discover a useful thing it didn't want to outlaw.

    Tom

    Posts : 166
    Join date : 2011-04-04

    Re: Inside a Russian PIO coupling cap - photos ..

    Post by Tom on Thu Mar 19, 2015 3:28 pm

    Yep. PCBs. Since they're from the '70s, they could be US as well, since PCBs were still legit then.
    Not a dangerous substance from a human exposure perspective, have you noticed any twitches Bob?
    (KIDDING! ONLY KIDDING!)
    Lots of enviro problems including good source of dioxins if heated enough.
    Cool that they're still around. We still find PCB containing hardware once in a while.


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    Re: Inside a Russian PIO coupling cap - photos ..

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