Firewall Sealant

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Stan Bahrns

Active Member

• Oct 31, 2005

• #1

I am ready to my upper dash skin & am wondering if there is any other sealant that will work other than proseal to seal the firewall, any suggestions?
Thanks,
Stan Bahrns RV7-A QB from Southern, IL

 

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lrfrey

Well Known Member

• Oct 31, 2005

• #2

Stan, when I mounted my brake reservoir (sp?) I asked Van's what to use, they said Permatex Red (600+ degree). I used copper, just a little higher temp.

Wick's has high temp silicone (600 degree) in a caulking gun tube for about $9.

I have no clue what the temp rating is on ProSeal.

If you want, I can bring a tube of silicone Thursday.

Larry

 

txaviator

Well Known Member

• Oct 31, 2005

• #3

Both Home Depot and Lowe's sell a fire resistant caulking, obviously rated for VERY high temperatures. Typically $9-$10 per tube.

 

f1rocket

Well Known Member

• Oct 31, 2005

• #4

txaviator said:

Both Home Depot and Lowe's sell a fire resistant caulking, obviously rated for VERY high temperatures. Typically $9-$10 per tube.

Click to expand...

Nope, not high enough. If I recall correctly, these are only rated to about 300 degrees. I may be mistaken.

 

N941WR

Legacy Member

• Oct 31, 2005

• #5

Van's sells Firewall sealant for $17.50.

Here's the description from their web site:

CS 1900 is a compound for sealing firewall structures. It is elastomeric at operating temperatures from minus 65 degrees to plus 400 degrees F and able to withstand flash temperatures of 2000 degrees F. This product can be used as a perimeter firewall seal on existing aircraft or during construction of new aircraft. In new aircraft, as the skins are being installed, the flange of the firewall should be coated with a thin layer and the skin riveted on while the material is still uncured ("wet").

 

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PJSeipel

Well Known Member

• Nov 1, 2005

• #6

N941WR said:

Van's sells Firewall sealant for $17.50.

Click to expand...

If you use this stuff, you'll want to be sure you're ready before you mix it. At 70 degrees you've got about 15 minutes before this stuff starts getting too hard to work with.

PJ
40032

 

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Stan Bahrns

Active Member

• Nov 1, 2005

• #7

Firewall sealant

Can Van's firewall sealant also be used to seal around cables as well?

 

Sparky

Well Known Member

• Apr 28, 2012

• #8

Sorry to revive a very old thread, but what should I use for firewall sealant? Vans now sell sells CS-1900 for $105 for 3.5 oz. Just a few weeks ago it was $45. I will not pay $105 for 3.5 oz.

 

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Bevan

Well Known Member

• Apr 28, 2012

• #9

Biotherm 100

You may consider Biotherm 100 available in reg or small tubes from...

http://www.planeinnovations.com/firewallkits.html

Apparently good for 2000 deg F

I bought the reg tube ($19) and I find it is easy to work with. Stays flexible.

Bevan

 

Dan Langhout

Well Known Member

• Apr 28, 2012

• #10

Look at this thread . . . . . .

http://www.vansairforce.com/community/showthread.php?t=72087

You might want to start at post #38. Actual testing with fire on all the popular firewall sealants.

 

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Stoo

Well Known Member

• Apr 28, 2012

• #11

This is what I used:

http://www.skygeek.com/flamemaster-cs-1900-sealant-6-oz.html

Skygeek did not add any hazmat shipping charges when I got mine.

Stewart Willoughby
6, finishing.

 

larrynew

Well Known Member

• May 23, 2012

• #12

Stoo said:

http://www.skygeek.com/flamemaster-cs-1900-sealant-6-oz.html

Just ordered some also. $16.99 (Flamemaster CS 1900 Firewall Sealant - 6 oz SemKit Cartridge) plus $12.04 FedEx shipping and no Hazmat on the receipt.

Got a really big box yesterday:

Click to expand...

 

Last edited: May 23, 2012