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09-06-2023, 09:38 AM
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Join Date: Aug 2021
Location: Owasso, OK
Posts: 68
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Firewall sealant
I'm getting ready to start section 22 and see the KIA instruct to use fuel tank sealant for the firewall. Should this not be firewall sealant such as Flamemaster CS-1900 sold in the vans store? Thanks!
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Eric Hamblin
Private Pilot/A&P/Aerospace Engineer
RV-12iS in progress. N993EZ
Build 121398
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Owasso Oklahoma
https://eaabuilderslog.org/?s=MYRV12
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09-06-2023, 10:42 AM
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Join Date: Apr 2007
Location: Salida, Ca
Posts: 258
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Quote:
Originally Posted by hamblin10
I'm getting ready to start section 22 and see the KIA instruct to use fuel tank sealant for the firewall. Should this not be firewall sealant such as Flamemaster CS-1900 sold in the vans store? Thanks!
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As far as I know, that is the correct interpretation. That sealant is used generically as an adhesive/sealant in a number of places throughout the build.
FYI, 3M makes a fire proof sealant that comes in a tube for a caulking gun that would be quite a bit more convenient for these type of small applications.
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Nate - Salida, Ca
RV-12is - N8183H
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09-06-2023, 11:05 AM
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Join Date: Oct 2005
Location: Estes Park, CO
Posts: 6,849
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3M 2000+
This stuff.
3M™ Fire Barrier Silicone Sealant 2000+
By the way, if you take a piece of packing tape and wrap the tip, it seals really well. Next use just peel off the tape and squeeze over a trash can. If there's a plug set up, it comes right out.
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Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
Builder Blog: http://wirejockrv7a.blogspot.com
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RV-7A #73391, N511RV reserved
Disclaimer
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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09-06-2023, 12:09 PM
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Join Date: Jun 2010
Location: Sunman, IN
Posts: 3,683
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…and
…and the Fire Barrier 2000+ is NOT the same that they sell at most big box stores, labeled with Fire Barrier CP.
Make sure you get the 2000+ type.
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Bob
EAA Tech Counselor
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09-06-2023, 12:35 PM
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Join Date: Apr 2007
Location: Salida, Ca
Posts: 258
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Nate - Salida, Ca
RV-12is - N8183H
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09-06-2023, 03:09 PM
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Join Date: Oct 2005
Location: 08A
Posts: 11,863
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Don't use a polysulfide sealant (aka proseal) in a firewall.
The FireBarrier 2000+ tests well.
I recently ran some tests with "real" firewall sealants. They generally fall into two classes, rubber based and silicone based. The recent market entries all seem to be silicones. Current favorite is Dapco 2100, as it is single part, no mixing, thus easy to dispense with little waste. Performance appeared to be on par with the two-part choices.
As Bob said, the home store 3M sealant is a latex base. Nope.
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Dan Horton
RV-8 SS
Barrett IO-390
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