Tubeless tyres

On the Rene Herse tires, they do not work with sealant that contains fiberglass. The fiberglass works through the threads and causes bleeding. Need to use Panaracer latex sealant or equivalent. As for the other problems, it sounds like a bad tire and should be exchanged for a new one.
 
I purchase mavic tubeless rim tape. I wonder what are these 2 black tapes for?
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I wrap 3 sets of tubeless rim tapes already.
Its my first time saw thess black tapes. Dunu what are these for..
 
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