In the UK we call them weather strips
They can usually be bought in lengths & cut to size but make sure you get the right clips as some need to be filed down as they scratch the glass when raising & lowering the windows.
I just received a set I ordered from the Mk1 Cortina Ownerss Club for much less than the ebay seller in AUS. I have not fitted them yet so I can not report how well they will work out. Everything I have bought from the Mk1 Club in the past has been has worked out great.