as the diagram is showing, the rubber is NBR. The supposition of our Ordertransaction (Mr. Raddatz) was that the lasering could be wrong, because this liner did not had been produced in the lasered quality yet. We excuse for this mistake and thank you for your hint.
The question is, would you like to take the liners, may be (of course) against lower price? As mentioned before in another case, you should / could grind the lasering at your place. What do you think about it?