radio interference
G.F. Reid
Funny you should mention that stuff. I don't know the name for it either, but I've been using it for about a year now with no problems. I save the stuff whenever I buy some electronic equipment and re-use it in the planes. It's thin, but is almost like foam. Good stuff in my opinion also.
PS...KF2WM (And I use a lot of electronic equipment, like you!)