Need weatherstripping for sliding glass door

Hello there. Can you remove  a sample and show us the end profile of the seal? We'll do our best to help you from there.

We're getting there. I'm afraid I can't make out the end profile in this photo; it's a bit blurry. Could you try taking another snapshot? We'll do our best to help from there.

Thanks for these photos. I am afraid we don't have an exact match for the seal you show, but see the Pella 58-181, the 58-173 or even the 58-055. Compare these kerf-mounted seals to your old one and see if you think any of them might work as a substitute.

Profile view of 58-055

Profile view of 58-181

Profile diagram of 58-173