Any ideas what this is?

This item is ceramic and about 4" square.

2 edges opposite each other have a groove the other 2 don't.





Theres also some markings on one side:



This item came from a B-17 crash site so i'm hoping its related, but i'm not holding up much hope?

Thanks in advance.

Jerry

Brake pad?

Could well be, what's the size Jerry?

Chock full of asbestos if that's what it is!

It is indeed a B-17 brake pad segment.
Shame one of the retaining clip grooves is broken, the Sally B team are always on the lookout for spares of these.

PB

Many thanks chaps, another specific B-17 part located.

Al, it's about 4 inches square.

I'll keep a look out for more next weekend.

Thanks again to PB for being the "phone a friend" when it comes to B-17 parts identification.