1/2" Bulb seal desired

A home owner from Shelby Township, MI says:
October 1, 2019
I am looking for a 1/2" bulb seal to replace an existing 5/16" diameter seal on my casement windows. The gap between my window and the window frame is 1/2" (see attached photo) and the existing 5/16" seal is inadequate and thus the reason I am looking for the larger diameter. In the photo I attached there is a temporary foam seal until I am able to find a suitable replacement.

I checked on your website and the biggest diameter bulb seal you show is the 3/8" diameter one. If you do not carry a 1/2 diameter bulb can you provide the name of a supplier who carries the larger diameter bulb. Thank you.
Thumbnail of the uploaded file named bulb seal cross section with dimensions.jpg
Thumbnail of the uploaded file named window gap.jpg
Thumbnail of the uploaded file named bulb seal cross section.jpg
Profile picture of Tom
Tom from SWISCO responded:
October 4, 2019

Hello! Unfortunately, we do not carry a 1/2" diameter bulb. I'm also not sure who may carry that. Could you possibly use something like our 58-056E? This is mostly used for doors, but a 1/2" gap is considerable for a window. Yours may be a special case that merits something as big as this.
25ft Kerf Mount Bubble Seal, 5/16"
25ft Kerf Mount Bubble Seal, 5/16"
58-053
$15.57
Swinging Door Compression Foam Seal
Swinging Door Compression Foam Seal
58-056E
$8.95
Identifying Replacement Weatherstripping
Identifying Replacement Weatherstripping
VIDEO
WATCH >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.