I am looking to replace the seal on the bottom of the vinyl window.

Question

What is the name of the part shown in the picture? It attaches to the bottom of the lower window and is the seal between the window and casing.

Tom · Accepted Answer

Can you take a photo of that top tip of the weatherstrip? Cut a clean slice through the strip and show us a cross-section, like the diagram below:

Example illustration of a cross section.