repalcement window seal/weatherstripping

I am looking to replace the window seals/weather stripping and although the picture is not too clear, there are two slots in the window for the bulb seal to be inserted, one is a barbed/kerf and the other (outer) angle smaller slot.

clearer picture attached. Looks as if the bottom of the bulb is flat. the barbed kerf inserts into the wood window along with curved front ridge (on the right in the photo). Hope this helps.