Rubber trim piece that seals roll out windows against window frame

Question

My roll out windows trim has hardened and is falling off the window. Windows were installed during construction 30 years ago. High end construction by builder. Unable to locate window mgf.

Tom · Accepted Answer

Sounds like you need new weatherstripping. We may be able to help, though the age might be a concern. I'd like you to remove a sample that is whole and undamaged and show me a clear photo of the end profile. That will allow us to match up the shape to something in our inventory.

I know that it's very brittle and removing an undamaged sample won't be easy, but please try your best. If the shape is too deteriorated then we won't be able to find a replacement.