Hi Pierre,
I disassembled my hardtop about 3 months ago. I do not recall any "seals" (like rubber) between any chrome parts and the hardtop. However, there was a lot of what I would call sealant between them. The sealant was very hard but was most likely soft when originally applied, then hardened with age.
I used I think the SLS site for reference and if you look there, I do not think you will find rubber seals where the chrome meets the hard top. There are of course many rubber seals used but again, not in the location you reference.
Lee