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  #11  
Old 05-12-2011, 12:40 PM
Andrew Sego Andrew Sego is offline
 
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Picking it up locally would be a big plus, since most of the products you'd want are going to be hazmat and incur a big shipping upcharge.
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  #12  
Old 05-12-2011, 01:42 PM
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DanH DanH is offline
 
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Let's be careful here guys. Best I know Home Depot sells 3M "IC 15WB+ Fire Barrier" and 3M "CP 25WB+ Fire Barrier" caulks. These are latex products, not silicone, and are only rated for max service temperature of 180F. They are also far less durable. For example, the silicone sealant has three times the tensile strength and a rated elongation of 500%, both good things for a dynamic application like an airframe.

Spruce has Fire Barrier 2000+.
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  #13  
Old 05-12-2011, 06:17 PM
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Dan Langhout Dan Langhout is offline
 
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Any opinions about the relative performance of Flamemaster CS-1900 vs. 3M Fire Barrier 2000+? I didn't know if you had ever tested the CS-1900.
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  #14  
Old 05-12-2011, 08:20 PM
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N941WR N941WR is offline
 
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Quote:
Originally Posted by DanH View Post
Ditto for me.

Pro Seal is not a fire barrier, this stuff is.
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  #15  
Old 05-12-2011, 09:05 PM
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DanH DanH is offline
 
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Quote:
Originally Posted by Dan Langhout View Post
Any opinions about the relative performance of Flamemaster CS-1900 vs. 3M Fire Barrier 2000+? I didn't know if you had ever tested the CS-1900.
I know nothing about CS1900 beyond what I just read on the data sheet:

http://www.flamemaster.com/Technicals%20PDF/CS1900.pdf

It looks like very good stuff.
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  #16  
Old 05-12-2011, 09:10 PM
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Dan Langhout Dan Langhout is offline
 
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I've got a tube of 3M Fire Barrier 2000+ in the shop and a couple of SEM tubes of CS-1900 on the way from Sky Geek. Need to get the firewall sealed no later than Saturday and I'm trying to decide if it's worth waiting for the CS-1900 to show up.
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  #17  
Old 05-13-2011, 07:29 AM
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DanH DanH is offline
 
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Quote:
Originally Posted by Dan Langhout View Post
I've got a tube of 3M Fire Barrier 2000+ in the shop and a couple of SEM tubes of CS-1900 on the way from Sky Geek. Need to get the firewall sealed no later than Saturday and I'm trying to decide if it's worth waiting for the CS-1900 to show up.
Ooooo, an opportunity for direct comparison. Won't help your schedule, but I'd burn check CS1900 if you want to send some.

The only downside I noticed with FireBarrier 2000+ was a tendency to lose its surface adhesion to red hot stainless. On the "cabin" side it remained perfectly intact but peeled and fell off the glowing vertical surface. The lesson is to use it where there is some mechanical grip assistance to help it stay in place....corners, edges, holes, inside passages, etc.

Under direct flame it slowly ablated to powder char, which I assume to be mostly the calcium carbonate component. Thin sections should probably have a metallic shield over the sealant if sealant failure would allow flame penetration. With a shield FireBarrier 2000 would be pretty bulletproof.

It would be interesting to see how well CS1900 resists peel and char.
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Last edited by DanH : 05-13-2011 at 07:31 AM.
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  #18  
Old 05-13-2011, 07:54 AM
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Dan Langhout Dan Langhout is offline
 
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Well . . . . . I ordered 4 tubes of CS-1900 and I doubt if I would use all four of them anyway. PM me your mailing address and I'll send you one as soon as I get them in.

(edit: FedEx now says Monday the 16th)
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Last edited by Dan Langhout : 05-13-2011 at 08:12 AM.
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  #19  
Old 05-13-2011, 08:45 AM
FredMagare FredMagare is offline
 
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Is High-Temp RTV suitable? Or does it dry out and crack? How about fuel tank sealant covered (protected) with aluminum tape? Might that be suitable?
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  #20  
Old 05-13-2011, 10:53 AM
868RM 868RM is offline
 
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Default 3M sealant

I am close to sealing my firewall and saw this post so I didn't even need to do a search. Thanks for the info Dan. I purchased (1) case (12) 10.3 oz. tubes on E-Bay for $67.00 delivered. Part # 98-0400-5299-9 3M Fire Barrier 2000+ ( use by date 3/10/12 ). If I can help someone out I will ship out a few tubes. I can't believe I will need more than 1 to 3 tubes at best. Thanks Ron RV- 8a 815-291-8864
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