AAflyer
Well Known Member
After what I thought was much judicious research, I found an off-the shelf product to use in sealing my firewall; 3M FB136.
Unfortunately, while working on my baggage door, I discovered that it has cured rock-hard, has cracked, lost its integrity and has leached a white powder.
The label says its for "sealing interior construction voids around wires, pipes, HVAC ducts and vents, in wood or steel framed non-rated construction." I figured the interior restriction was not a problem, as it wasn't going to be exposed to the weather where I was using it. The label also says Store at temperatures above 32 degrees F. Again, not a problem as far as storage is concerned.
I applied this to my plane last fall, and since then it has been as cold as 5 degrees F this past winter, and this is the result.
I'm now chipping it away, and would love to hear some successful stories about what you used.
![IMG_7555_zpsb4xyecye.jpg](/community/proxy.php?image=http%3A%2F%2Fi1381.photobucket.com%2Falbums%2Fah213%2FAAflyer%2FIMG_7555_zpsb4xyecye.jpg&hash=513ec6a055164a0ae2b19f59cc500d76)
Unfortunately, while working on my baggage door, I discovered that it has cured rock-hard, has cracked, lost its integrity and has leached a white powder.
The label says its for "sealing interior construction voids around wires, pipes, HVAC ducts and vents, in wood or steel framed non-rated construction." I figured the interior restriction was not a problem, as it wasn't going to be exposed to the weather where I was using it. The label also says Store at temperatures above 32 degrees F. Again, not a problem as far as storage is concerned.
I applied this to my plane last fall, and since then it has been as cold as 5 degrees F this past winter, and this is the result.
![IMG_7553_zps5nmh242v.jpg](/community/proxy.php?image=http%3A%2F%2Fi1381.photobucket.com%2Falbums%2Fah213%2FAAflyer%2FIMG_7553_zps5nmh242v.jpg&hash=a173ffe33516b43e3714a71b6af7ae19)
![IMG_7554_zpsugu8gows.jpg](/community/proxy.php?image=http%3A%2F%2Fi1381.photobucket.com%2Falbums%2Fah213%2FAAflyer%2FIMG_7554_zpsugu8gows.jpg&hash=eee6b3e7253a4c68027dad0c8df07a81)
I'm now chipping it away, and would love to hear some successful stories about what you used.