Rubber seals/corner trims

Spare items were not found at nowadays,so u can design it your self,paste edge with black silicone gum,After that u can trim with razor blade.
Yes, someone else told me the same thing. I might have a go at that. Alternatively there may be a suitable rubber profile out there somewhere which can be trimmed/shaped to do the job. The closest I can find is: T solid rubber profile 27-23mm. Article number 21605277from Rubberstock