Firewall sealant

[DanH]

I'll modify the statement. Don't use proseal in overlap seams.

Sealing the head of a rivet on the engine side of the firewall is not a problem. Use proseal if you wish. As a general rule, you can put practically anything on the engine side of a firewall without concern.

[philcam]

Dan,

I'm curious about what your testing found between the 3M FireBarrier 2000 and the Dapco2100.

FireBarrier is $41 for 10oz and Dapco is $196 for 6oz.

[DanH]

Not a lot.

[hamblin10]

So I called tech support and they explained that fuel tank sealant is used only to keep carbon monoxide out of the cabin. This sorta makes sense to me as only the flanges are sealed and not every rivet if we were really concerned about fire.

[Brantel]

Originally Posted by hamblin10

So I called tech support and they explained that fuel tank sealant is used only to keep carbon monoxide out of the cabin. This sorta makes sense to me as only the flanges are sealed and not every rivet if we were really concerned about fire.

Well, for me personally, anytime I am dealing with the firewall I am concerned about fire.

If you have a fire in front of the firewall, it gets bad fast! Just some of those concerns are when stuff heats up and starts melting, off gassing, billowing smoke and burning.

Have had many a firefighter tell me that most people die from smoke than from the actual fire during an incident.

[rv12is]

Unfortunately, my understanding is that those building as E-LSA don't have a choice. We have to build per the instructions.

[N8DAV8R]

Originally Posted by rv12is

Unfortunately, my understanding is that those building as E-LSA don't have a choice. We have to build per the instructions.

An E-LSA builder will sign a document stating that is what they did.

Without remembering exactly what they were, I recall there being at least a few places where this was may have not even been possible due to availability of materials or parts changes.