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Discharge Pattern on the Inside of the Teflon Liner

Reflected Darkfield Illumination


Hydrocarbon or fluorocarbon fluids flowing through Teflon tubes can create very high static charges. In this case kerosene was flowing through a wire-braid hose with a Teflon liner. The static charge built up on the interior of the Teflon surface and then discharged to the wire braid on the outside of the tube. The discharge created a hole through the Teflon liner and the glass fiber insulation on the outside of the Teflon. The result was the formation of a leak. There were a number of these discharges so the leak became significant.

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