Hole in firewall

[pierre smith]

Guys, I have a 2” hole in my RV-12 firewall for the UL engine’s computer plug. The wire bundle is about 1” in diameter.


What’s the best (approved) way to seal the hole and render it fireproof?

Thanks,

[abwaldal@gmail.com]

The most obvious way is with a piece of stainless steel riveted with stainless steel rivets. Sealed between with high temp RTV. I did this with one on my RV-6.
Used sheet goods and SS pop rivets.
I polished and rolled the edges But ???!!!
I had followed my 1990 plans as to cutting the holes for what I can no longer remember.
Ok it's not pretty in my opinion but had no choice
At least I can't see the repair from 10,000 feet at 200 mph.
Love these little airplanes and this forum.
Art

[lr172]

I would make or buy a 1" split tube/flange in SS. I cover the tube opening with firesleeve and a SS clamp at the wire exit, which I think is good enough, but some prefer to fill the tube with 2000* fire barrier caulk.

Larry