In article ,
Alix wrote:
It's not inside a PC but outside. For example, I have a mic cable
which plugs into the PC. It has a joint which I have made and the
cable gets moved a lot. Most of the PVC insulating tape I have seen
starts to open up or even unravel under the repeated flexing. So I
want to seal the insulating tape on the joint or to replace it
entirely with something which canbe sealed and not need any further
attention.

Best thing is not to have a joint in a flexible cable. A suitable
connector would be a better solution. The snag with heatshrink for this
use is it's not flexible - so the cable flexes immediately before or after
it and breaks. A proper connector will have a rubber gland which sort of
spreads the length of the cable flexing.

The normal mic connector is of course the XLR - but this might be a bit
big and heavy for this use - especially if the PC connector is the
standard mini jack. If the mic and cable is getting a lot of movement, I'd
fit an XLR chassis connector into a suitable instument box and weight or
fix that down and run a cable from there to the PC - and plug the mic
cable into the box. An XLR mic cable is designed to be flexed without
damage.

--
*A bicycle can't stand alone because it's two tyred.*

Dave Plowman London SW
To e-mail, change noise into sound.