Firewall putty

JLB · Post by **JLB** » Wed Aug 03, 2016 10:01 am

I have a '74 M5 220 and am in the process of reinstalling the overhauled engine. It has a black putty sealing all the firewall penetrations and I have not been able to locate a source, what are you folks using?

Stinger · Post by **Stinger** » Wed Aug 03, 2016 10:11 am

Quick Google search led me here:
http://www.supercub.org/forum/showthrea ... What-is-it

Duct Seal Putty or a Zinc Chromate Putty.

Another link with some good info maybe.
http://www.shortwingpipers.org/forum/sh ... mate-Putty

Duane · Post by **Duane** » Wed Aug 03, 2016 10:53 am

We get the firewall sealant from Aircraft Spruce.

JLB · Post by **JLB** » Wed Aug 03, 2016 2:04 pm

Thank you Stinger, I looked all those up and there are a few choices, many seem to use Hi temp rtv. Thanks Duane, what brand and type do you get from aircraft spruce? John

Duane · Post by **Duane** » Thu Aug 04, 2016 7:18 am

Oops, I was wrong about Aircraft Spruce. We use the Flamemaster from Aviall.

Vtaildriver · Post by **Vtaildriver** » Thu Aug 04, 2016 8:14 am

http://www.skygeek.com/flamemaster-cs-1 ... -6-oz.html

Everything you ever wanted to know about firewall sealants

http://www.vansairforce.com/community/a ... 72087.html

Make sure to open the embedded pics from DanH in the above forum since he did testing on a bunch of the different firewall sealants and posted results.

From aircraft spruce another good product:

http://www.aircraftspruce.com/catalog/a ... 0caulk.php

aero101 · Post by **aero101** » Thu Aug 04, 2016 9:02 am

High Temp RTV not nearly as high temp as the flamemaster putty stuff.. Works ok for CO2 leakage, but not worth anything in case of real fire...

JLB · Post by **JLB** » Thu Aug 04, 2016 9:14 am

Thanks everyone, looks like I will purchase the flamemaster.

Firewall putty

Firewall putty

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