How to seal engine bay tape, on conduits? - oilrag
The electrical cables in the engine bay are in ridged flexible plastic conduits and these are taped with that old type of electrical tape at the joints.

I would like to seal these in some way, to avoid the ends unravelling, for example before any oil contamination. What with? I thought of brushing on a coat of marine grade varnish, but don`t want it to let go and unravel as it soaks in.

Cheers
How to seal engine bay tape, on conduits? - Victorbox
How about Frost liquid tape? auto.frost.co.uk/frost/Liquid%20Tape

How to seal engine bay tape, on conduits? - NARU
I think you need self-amalgamating tape
How to seal engine bay tape, on conduits? - oilrag
thanks for the replies, eventually I found some info on a historic ships site too.
How to seal engine bay tape, on conduits? - none
Never used liquid tape, but have used instant gasket. Same thing I suspect.