Do i remove the black rubber piece on the axle sode of my wheel hub assembly before install

What is your question?

I bought new front wheel hub assemblies and both came with a rubber cap-like ring on the axle side of the assembly. Does this need to be removed and the assembly and axle go metal on metal?? I put one assembly on and drove a day or so and when I took it off the ring was shredded. Am I doing something wrong?

What makes this problem better or worse?

Driving

How long has your 2012 Kia Sorento had this problem?

Couple days