what Stuart? semantics again?
something that prevents 'conduction' is an insulator
I guess dielectric grease doesn't include an additive that 'conducts', so yeah, Fred is wrong too, but it also doesn't 'insulate' the mated surfaces, it simply seals them from the environment, promoting continued good 'conduction'
I think what happens is the firm mateing of the surfaces actually displaces the material to a film thickness that doesn't actually 'insulate but, by preventing the invasion of varying humidity, prevents oxidation
so, dielectric grease insures continued conductivity, it doesn't prevent it - unless maybe it's slathered on pretty thick - works extremely well to smear a light application to tail lite bulb bases when you install them to avoid the oxidation that frequently happens to distrub good conductivity
Bill
