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What’s it called?
Replacing some rotten wooden beading outside of a window pane. Google skills have failed me. What’s the rubber strip that would sit between wooden bead and the glass called?
I assume it’s there to provide some weather proofing as well as cope with wood expanding/contracting with the weather.
Tried lots of searches but nothing appearing looks like what I need.
Could be a wedge bead
Only showing wooden beads.
That search led me to window gaskets but they all seem a particular contour. I think I just need a plain flat strip/roll of rubber or whatever material it’s made of.
Flexistrip? Basically mastic on a roll used to glaze wooden frames, modern alternative to putty. Must be 20 years since I used it, but still got a box in the garage...

Flexistrip that looks like the stuff, thank you steveb ?
Glazings normally on foam tape...
My timber sunroom is. Against the glass and beads I've trimmed shitty silicone etc out taped and used ob1 clear.