No brand or manufacturer markings on these casement windows nor in between the panes. This is from the frame of a casement window.
Bob from SWISCO responded:
March 18, 2020
We don't have an exact match for this kerf seal weatherstripping, but check out our 58-053 or 58-055. See if you could use one of these is as a substitute. If you want, you could order a sample of each from our Samples Page here.