Im looking into replacing the weather stripping in my pickup back window. The ones I need to replace are the vertical ones that go in the middle between the inner and outer pieces of glass

So the strip that goes in between parts 9 and 10. I thought it was 11 but that is part of the frame. Any ideas? I dont see it anywhere in the diagram

 

check out a residential glass shop. im a glaizer and most likely its a gasket that wraps around 1/4" glass and then you wedge it into the framing # 11 i guess. use a rubber mallet to bang it back on the glass and they should fit snugly togeather