echristley(at)att.net
Guest
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 Posted: Fri Dec 18, 2020 9:04 am Post subject: Has anyone used very high temp silicone FWF? |
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If an engine fire has burned through a 1/4" bead of 700F silicone caulk that has a stainless cover, it has already burned off the head of every aluminum rivet and turned every bit of epoxy around it to ash. I don't see the advantage beyond what is cheap and readily available.
On Friday, December 18, 2020, 11:46:40 AM EST, Charlie England <ceengland7(at)gmail.com> wrote:
On 12/18/2020 9:25 AM, rparigoris wrote:
| Quote: | Hi Charlie Is this the gray stuff you are talking about from ACS?:
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| Quote: | Does it expand as you were talking about? To compare it with the Permatex products that have a 750 and 700F temperature rating, what might the temperature rating of the Firebarrier 2000 be? Thx. Ron
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Hi Ron,
That product has been touted by many on various aviation forums as being
intumescent, and I've always assumed that it was. But I just spent about
half an hour prowling the 3M sites and can find no reference to
'intumescent' in their docs. Nor can I find any direct reference to
temperature rating; only the 'implication' of 2000 degree rating in the
name. The docs refer to various ASTM testing methods, which you can read
for about $50 each if you're willing to pay.
On the other hand, this stuff:
https://www.3m.com/3M/en_US/company-us/all-3m-products/~/3M-Fire-Barrier-Sealant-CP-25WB-/?N=5002385+3293123924&rt=rud
does have the magic word in its description, and mentions a 1000 degree
temp rating.
3M™ Fire Barrier Watertight Silicone
3000 WT Sealant
is also listed by 3M as being intumescent.
I've attached a pdf of 3M fire block products. Hope it will make it
through; its 1.5Mbytes.
Charlie
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