sash? seal on Milgard vinyl casement window.

Hey there! I'm sorry to say, we do not sell the type of bubble seal you are searching for. Your kerf fairly large and also real short, so I think either our ribbed kerf (like 58-053) or flat strip (like 58-135) can replace it. It does not seem that they would fit into the channel properly.

Given that these were discontinued by the manufacturer, I am not sure where you'd be able to source a replacement.

I apologize we can't be of more help!