3/8 glazing seal

[Carl V]

I'm helping my cousin restoring his 1979 Unik 17ft FG trailer. It has sliding windows that need new plexiglass. We can't seem to find the appropriate replacement rubber glazing seal.
The panes are 1/8 thick and mounted in 3/8 wide X 3/8 deep aluminium channels. The glazing strip is the same type to the one pictured.

Vintage Trailer Gasket and Vintage Trailer Supply don't have anything that fits. We also searched the web and couldn't find anything, same with local businesses around here.
We couldn't find any window manufactured brand stamped or labeled anywhere on the windows.
Any suggestion or alternate option appreciated!!
(trailer picture for reference, it's not my cousin's trailer but same model).


Thanks!

[Radar1]

You might check to see if any of the seals at Pelland Industries matches close enough to what you have.
Not exactly the same but might be close enough.

[Radar1]

This might work too. Interstate RV Metal.

[Carl V]

Originally Posted by Radar1

You might check to see if any of the seals at Pelland Industries matches close enough to what you have.
Not exactly the same but might be close enough.

This one is about 1/8 too narrow. We searched the Pelland website and didn't find anything that was close. And nothing that fits Hehr windows seems to match.

Thanks!