What is this shower seal?

[Sandwiches2000]

Does anyone know what type of shower seal this is? It sits separately to the glass shower screen which is concertina style. I can't seem to find one anywhere to replace it!

 

[Aquarius]

Not one I’ve seen before, usually have to go to same manufacturer to obtain, but maybe try something like this? 4-6MM AQUA SHOWER SEAL - https://www.theshowersealshop.com/4-6mm-aqua-seal.html?gclid=CjwKCAjwx9_4BRAHEiwApAt0ztUeLOE-yhCa0wP3eD-FEJ6uhuDcI_XMZTw_T1CDESCI4eVnvLWvyhoC7ooQAvD_BwE