Beading on wooden conservatory windows

[mcbean]

We have a half circle window in the front of our wooden conservatory (luna) , the bad weather has rotted the seals holding the windows in (rebates ?) - they were made of some sort of flexible compound and tacked on like wood , the maker has gone bust

anybody any ideas where we could get some new ones ? we have tried a bespoke wooden conservatory maker but they dont do " parts"

Cheers for any ideas

 

[crank39]

A picture of the cross section would help loads

 

[mcbean]

Have failed dismally to add a picture but will persevere thanks for the request