"Jeffrey Angus"

No, this crap looks like 3M weather strip adhesive.
Sometimes it looks like it's applied sparingly, other times
it looks like it was put on with a caulking gun.


** I've always wanted to know just WFT it really is !!

At first impression, it looks like ordinary contact adhesive - but it is
quick setting and dries to a hard surface. With time and heat it become tan
coloured and brittle. Then it goes toast brown and becomes corrosive and
conductive.

If coating the pins of an op-amp, the leakage current causes DC offsets and
crackling noises.

If coating small diodes and resistors etc - it will slowly eat the leads
right off.

If coating PCB tracks with hundreds of volts between them, the conduction
heats the glue directly until there is an explosion.

IME , a local ambient temp of about 55C is enough to set it off on its
pathway to hell.



..... Phil