Weatherstripping on my windows is very brittle

A quick learner from Massachusetts says:
March 19, 2020
Just replaced some spiral tilt window balances I received from Swisco today (THANK YOU!), and now I'll do a whole bunch more!IWhile doing this, I realize the weatherstripping on the bottom of the windows is cracking, mushed to one side, brittle....and a lot of it already broken off. It slides right into a track on the bottom of the window. I don't see a similar replacement on your site, so maybe you can suggest something. The windows have no brand name or anything (but the spiral balances worked so I got that right!).
I've attached some photos.
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Bob from SWISCO responded:
March 20, 2020

Thanks for writing in. We don't have an exact match for this weatherstripping, but it's possible something else with a similar T-Slot could work as a substitute. Check out our 58-135. See the dimensions below, particularly of the size of the T base, and let me know if you think this could work for you.

Profile view of 58-135
Profile view of 58-135
25ft Bubble Seal, 3/16" x 11/32"
25ft Bubble Seal, 3/16" x 11/32"
58-135
$15.57
Identifying Replacement Weatherstripping
Identifying Replacement Weatherstripping
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