Bubble seal for K and K window

Question

I have an old K and K window with a L308 stamped on the hinge of the window.  I am looking for bubble seal for the window.  Does this stamping help me find the right seal for this double crank out casement window?

Tom · Accepted Answer

I'm afraid it doesn't. We may still be able to help, but I'll need you to remove an undamaged sample of the original seal and show me a clear photo of the end profile. See the video below for more information as to what we need.