These, when dry, insulate almost, but not quite as well as solid paraffin.
Be sure to insulate all joints and wires well inside the box.
I frankly don't know how we could insulate the peas from the effects of the saltpetre.
By means of the ribbon he held the cord to insulate it from his hand.
We are to be conductors of the Divine energy; not to insulate it.
We might ...