3M? Fire Barrier Caulk CP 25 WB+

[N941WR]

Do any of you have experiance with 3M? Fire Barrier Caulk CP 25 WB+?

A friend who is building a Murphy Supper Rebel recommended it but I can't find any reference to in the homebuilding forums I have checked.

"Up to 4 hours Fire Protection." sounds good to me.

[TerryPancake]

Originally Posted by N941WR

Do any of you have experiance with 3M? Fire Barrier Caulk CP 25 WB+?

A friend who is building a Murphy Supper Rebel recommended it but I can't find any reference to in the homebuilding forums I have checked.

"Up to 4 hours Fire Protection." sounds good to me.

Good Morning Bill. I don't know if I'll be in my RV 4 hours even if it's not on fire....

[thallock]

Bill,

There's no information on what temperature it can withstand. This product appears to be for housing construction. We've seen this discussion before on products that you could buy from Home Depot/Lowes, and they do not meet the 2000 degree requirement for an aircraft.

Why don't you contact 3M and find out what it's specs are, and let us know.

Tracy.

[az_gila]

If it's rated for a 4 hour fire protection rating (seems to be from the 3M data sheet), then it won't burn through at 2000F ... per the NFPA codes....

Testing details here....

http://www.klsecurity.com/ul_fire_rating.htm

gil in Tucson

[thallock]

Gil,

Thanks for the info. That would make it acceptable for FW penetration sealant. However, at $185 for 10 oz, that would make it three times as expensive as the sealant that Van sells:

http://www.vansaircraft.com/cgi-bin/...product=cs1900


Always looking for something that we can seal the holes in the FW without spending a fortune.

Thanks,
Tracy.

[az_gila]

Whoaa...

Didn't see the $185 bit!!

gil

[rv72004]

Glasair uses this product. Excellent .It also expands in a fire to offer better sealing of joints/holes.

I paid $30 for a tube . You dispense it with a standard silicone gun dispenser.