I can't find the posts I made about this, someone else was wanting to know what it is & what its made of.
This is what it looks like
I have found they are actually a PTC (positive temperature coefficient)
About the fridge starters.
http://www.sensata.com/download/8ea.pdf
About the chemical thats in it.
http://en.wikipedia.org/wiki/Barium_titanate
1Kg of it is worth US$112
http://www.advancedmaterials.us/5622-ON4.htm
I'm quite happy about this post, after years of wondering what that thing is I have now found out.
It took a bit to search for info, no wonder no one else knew what it was.
Even though all the infos there on the net, there was no connection between the 3 main subjects. **** google
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