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-   -   FIREPROOF SEALANT (https://vansairforce.net/community/showthread.php?t=157037)

T.O.Craig 01-19-2018 07:45 AM

FIREPROOF SEALANT
 
HOWDY TO ALL,
I can't remember where we purchased our fireproof sealant. I have some areas that need attention on the firewall.

pazmanyflyer 01-19-2018 08:26 AM

Quote:

Originally Posted by T.O.Craig (Post 1233361)
HOWDY TO ALL,
I can't remember where we purchased our fireproof sealant. I have some areas that need attention on the firewall.

Which sealant are you using? Here is one popular version: http://www.aircraftspruce.com/catalo...hoCloQQAvD_BwE

rvdave 01-19-2018 09:31 AM

There is a 3m Fire sealant at Home Depot also, the 2000 series.

DanH 01-19-2018 09:45 AM

Quote:

Originally Posted by rvdave (Post 1233400)
There is a 3m Fire sealant at Home Depot also, the 2000 series.

They have 3M FireBarrier 2000 silicone at your Home Depot? The website only lists latex 3M fireblock sealants.

rocketman1988 01-19-2018 10:37 AM

Yeah...
 
Yeah, I had to look twice at the Home Depot stuff before I realized that it was LATEX.

Ordered the correct stuff on amazon...

Lynnb 01-19-2018 01:47 PM

Can 3M FIRE BARRIER 2000+ be substituted everywhere one would use Red RTV?

Lynn

DanH 01-19-2018 03:12 PM

Quote:

Originally Posted by Lynnb (Post 1233462)
Can 3M FIRE BARRIER 2000+ be substituted everywhere one would use Red RTV?

Depends on where you were using red RTV.

I use 3M FB2000 on firewall edges and penetrations, Permatrex Ultra Black (aka Loctite 598) almost everywhere else. Not as corrosive, highly oil-resistant, and lots better looking in an engine compartment.

rvdave 01-19-2018 04:39 PM

I was wrong about the 2000 series but it is a 3M polyurethane orange foam fb. Not sure about its performance.

Lynnb 01-20-2018 05:36 AM

Quote:

Originally Posted by DanH (Post 1233470)
Depends on where you were using red RTV.

I use 3M FB2000 on firewall edges and penetrations, Permatrex Ultra Black (aka Loctite 598) almost everywhere else. Not as corrosive, highly oil-resistant, and lots better looking in an engine compartment.

Yeah, I was thinking about all the places Van's calls out for a Dab, such as down the edges of the SEET tubes to keep them from unraveling, or sealing around Baffles.

Thanks,
Lynn

snopercod 01-20-2018 06:39 AM

You have to be careful choosing a fire barrier caulk. On my Lancair I used the stuff that came with my Firewall 2000 Ceramic Blanket kit - 3M, I think. Over the years, it ate into my engine mounts.

DanH 01-20-2018 07:32 AM

Quote:

Originally Posted by snopercod (Post 1233599)
You have to be careful choosing a fire barrier caulk. On my Lancair I used the stuff that came with my Firewall 2000 Ceramic Blanket kit - 3M, I think. Over the years, it ate into my engine mounts.

John, can you identify the sealant?

snopercod 01-20-2018 03:10 PM

Quote:

Originally Posted by DanH (Post 1233613)
John, can you identify the sealant?

I'm afraid not. I threw the tube out over twenty years ago. Here's what it did to my engine mount, though:



I wire brushed it down to bare metal, determined that the damage was superficial only, primed it with red oxide primer, and top coated it.

DanH 01-21-2018 07:02 AM

Hmmm. I suspect latex sealant, or one of the acid cure silicones, but I'll have my cowl off today for a condition inspection in progress. I'll take a hard look at the FireBarrier 2000, now going on 9 years since installation, in a humid deep south climate.

Bavafa 01-21-2018 08:04 AM

Quote:

Originally Posted by DanH (Post 1233787)
Hmmm. I suspect latex sealant, or one of the acid cure silicones, but I'll have my cowl off today for a condition inspection in progress. I'll take a hard look at the FireBarrier 2000, now going on 9 years since installation, in a humid deep south climate.

Hi Dan,
Please report back if you see any sign of issues, I just used the same Fire Barrier 2000 to seal/adhere fiberfrax/stainless steel sheet to my firewall. It will not touch the engine mount but still would like to know if it has any corrosive affect on metal.

tgmillso 01-21-2018 01:35 PM

Hey Meherad,
My heart skipped a beat when I too read these last few posts. I checked the specs on Fire Barrier 2000+ and it is indeed a neutral curing silicone, so non corrosive. Specs, and statement that it is "neutral-cure" may be found below:
https://www.3m.com/3M/en_US/company-...3123941&rt=rud

The only negatives I could find with respect to corrosion were during the curing process. In one of the data sheets available the following statement is made:
"Note: In confined cure conditions, there may be discoloration of brass, copper or other sensitive metals."
http://multimedia.3m.com/mws/media/1...alant-2000.pdf

Apart from that the only other corrosion info on the product I could find was an old thread DanH contributed to on VAF:
http://www.vansairforce.com/communit...t=35016&page=2

Hope this helps you sleep better.

Tom.

DanH 01-21-2018 09:22 PM

Previously I said

Quote:

Hmmm. I suspect latex sealant, or one of the acid cure silicones, but I'll have my cowl off today for a condition inspection in progress. I'll take a hard look at the FireBarrier 2000, now going on 9 years since installation, in a humid deep south climate.
Not the slightest sign of corrosion on anything. Maybe in another 9 years.

Bavafa 01-22-2018 08:41 AM

Thank you Tom and Dan for confirming this.


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