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Re: heater insulation


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



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