Re: Non conductive silicone

[JOSEPH BRINCAT]

Be very careful about the indiscriminate use of "rubber material" as high voltage insulation. Many compounds of black colored rubber use carbon black as a filler, these compounds will conduct electricity. I found this out after trying to use a piece of black rubber automotive hose as a grommet on a spark plug lead. You can test for some level of conductivity with a normal VOM set on the highest resistance scale.
Joe B