We have two casement windows that have deteriorating bulb weather stripping as noted in the pictures. The current bulb stripping is too brittle to obtain a decent sample to photograph. The diameter of the tubular shape appears to be 1/4". I have added a picture of the window's specs printed on the interior edge of the window.
The brand is "Better Windows" installed in 2006. I'm unable to determine the size and shape of the kerf element, as the bulb is somewhat fused to the vinyl window frame. Your assistance in determining the appropriate replacement kerf bulb stripping is greatly appreciated. Thank you.