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Melissa & Jim wrote: > > If it's just on > >the outside how can the dust be getting on the inside? > > Right!!! And besides, does anyone have any real proof that there is > asbestos in these? > > I never thought about this before. > > I'm pretty sure it's not fiberglass. I took some of it to the lab and checked it with the microscope. Fiberglass is very regular in structure and the fibers are long and transparent. This stuff however has short, rather irregular fibers that are not transludent. I don't have a reference for proper astbestos myself, but from what I've seen from micoscope pictures they come very close. Also when asbestos wasn't considered dangerous and I was an innocent youngster, I used to repair the exhaust of my bike with white asbestos band (? it looks like a piece of white rope) to seal the connection between the exhaust and the cylinders. That looked exactly like the stuff in the insulation. So, in conclusion: not perfectly sure, but for me beyond a reasonable doubt. The insulation around the flex tubes is on my car identical to the insulation around the heater boxes. It is however as you say stitched around all four edges. However, the insulation material on the inside is the same, and at the back side is the same greyish cardboard like material. Good change that, as the US was a bit faster with regulations on the use of asbestos than Europe, it was not allowed in the US. Also, my cars are from '67 and '65, at that time asbestos was great stuff everybody used without thinking of a possible danger! On our cars there is no real danger as long as the heater boxes are solid and not rusted through. Cheers, Theo