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Old 8th Nov 2017, 8:28 pm   #21
G6Tanuki
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Join Date: Apr 2012
Location: Wiltshire, UK.
Posts: 13,953
Default Re: Best oil-proof sealant?

The issue with 'sealing' coax is that once any kind of liquid gets either into the gap between the inner insulation the braid and the outer jacket, or the core and the inner dielectric, you get spectacular 'wicking' because of surface-tension effects.

These can drag liquids over tens/hundreds of metres in impressively-short times. The smaller the gap the greater the effect!

[Trust me on this - I had to replace the wiring-loom on my Defender because poorly-specified sealing on the wiring-harness caused oil to wick-back all the way from the engine to the ECU under the seat.]
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