Failing seals on double hung 20 yr old Semco windows

A home owner from Kalamazoo, MI says:
October 12, 2019
Picture is cross-section of window seal. Located on top sash along the bottom, facing inside. Fairly rigid yet flexible. No markings. No numbers. Ghost part. ;)
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Tom from SWISCO responded:
October 16, 2019

I'm afraid that we don't have an exact match for this weatherstripping. Could you use something like our 58-055? This has an angled kerf, and while its angle isn't as dramatic as yours, it may be worth considering. Look it over and let me know what you think. If you wanted to, you could order a sample of it here to try it out first. 
9/32" Bubble Seal With Angled Base, 25ft
9/32" Bubble Seal With Angled Base, 25ft
58-055
$15.97
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