white color or other alternatives for kerf mount bulb seal

Hi - I see that you have the 3/8" kerf mount bubble seal (Product Code: 58-114) I am looking for this in white...or maybe an upgraded alternative. Do you have either?

I have the slotted molding: 1/2" depth with the slot directly in the middle. I believe my molding is 3/8" or slightly larger. I cannot find any PNs or markings. It was originally installed in 1986ish.

Thank you.
Jeff

"I believe my molding is 3/8" or slightly larger"

I meant to state that the bulb on my existing (damaged) seal is 3/8" diameter - or could be slightly larger.