Cloth Light trap Material for Plate Cameras?

Hi,
Ok, its been 8 years ago that we were talking about this light seal material for single sided metal plate holders.
Anyone found a good material yet that blocks light and can stand up to the rubbing from dark slide going in and out?
I've got more to do and hope someone found something.
Thanks,
Robert

I've yet to find the right velvet ribbon, but I also got pre-occupied with other things. I still need some.

Ian