Firewall sealer.

[bharmon77]

I need to fill some small spaces between my frame tubes and firewall I know that past practice has been to use a fire resistant calk. Is there a specific brand that the SCTA inspectors want or can I use the stuff at my local Ace Hardware? Ace has a material called Flame Stopper 5000 Intumescent Sealant, it expands when exposed to extreme heat and it conforms and is tested to ASTM E-814 and ASTM E-119 if that means anything to anyone? Just reading the MSDS sheet it sounds like what I need but will this brand be accepted by the inspectors?  Is there a better recommendation?

BHarmon

[NathanStewart]

Try contacting MAZDA1807 (Peter Shotrosky) about the stuff he has available.  He's a commercial/industrial fire systems installer by trade and has some great stuff.  He can also tell you about another source of putty that a lot of people use that actually burns... vigorously.  Don't use that stuff.

[akk]

We use 3M Fire Barrier ...purchased from Air Craft Spruce & Specialty Co. 877-477-7823 part # 05-00950  page 127 of 2009-2010 catalog..we have never had a problem at inspection.....believe me it is good....an acetylene torch will not melt or cut it!!!!!!!!!!!!!!! the catalog has other aircraft firewall stuff...

Akk

[Steve Walters]

Hilti FS-1 Fire caulk;

Can be purchase at mechanical wholesalers, and the tech that was working with me last year, worked for Home depot said you can purchase it there.  It has a fire rating higher than a 10 gauge steel panel, and is used by the nuclear industry for fire wall penetrations.  Get the MSDS with it and keep it with your log book.

Steve

[doug odom]

What ever you get test it. Take a couple pieces of scrap metal and seal them up. Then in a couple days put a torch on it and see for yourself how good it works. The only way you can be sure.
Doug Odom in big ditch