It was the nylon I believe. I have the bag of it at my shop, I'll have to check. You can flock the inside still by cutting a thin cardboard circle and attaching a knotted loop through a hole punched in the center of the circle. Then push the cardboard up just shy of touching the objective. Use a very thin layer of epoxy and then the loose flicking. But I think that adhesive backed flocking paper would probably be best for the guide scope situation, or the SCT. Edmund scientific sells a good variety of flocking paper, adhesive back and non backed.
It's always good to have options stored away in the brain for future use.