Milgard casement window weather strip replacement

I'm afraid I don't know what kind of weatherstripping you have. In order to see if we have a good match, I'll need you to remove an undamaged sample and show me a clear picture of the end profile. Measurements of the end profile would also be a huge help. The video below will go into more detail.

Please note that if we do have a match, there's no guarantee that ours will be "better." They don't really make different quality grades for weatherstripping. In general, you use whatever fits.