stopping leakage of mineral oil from wire feedthroughs? (fwd)

[<sroys@xxxxxxxxxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 10 Nov 2004 14:37:08 -0500
From: Jack Vandam <snotoir7674g@xxxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>, hvlist <hvlist@xxxxxxxxxxxxxxxxx>
Subject: stopping leakage of mineral oil from wire feedthroughs?

I have been working on a project that requires a small, high frequency
transformer, not too much unlike a flyback, in mineral oil.  I am using a
small plastic container to hold the transformer and have the input/ output
wires passing through the plastic container at several points.  However,
just after completing my first immersion of the transformer, I discovered
that oil was leaking through one of the feedthroughs.  Originally before
adding the oil, I thought I had sufficiently sealed around the feedthrough
holes with plastic weld epoxy.  However, apparently not.  What a mess I had
today draining out the oil and starting over again.  Getting rid of the oil
residue required both mineral spirits and finally acetone.  Now I have to
reapply a sealant around the wires/ feedthroughs.  What is recommended so I
don't have this happen again?  I'm thinking of trying to dispense a generous
amount of silicone around the areas, but would this be better or should I
stick with the epoxy?

Thanks,
Jack