How do you know you are using the optimal material on the cover of your process or web handling roller? There are at least 15 different types of elastomeric covers in various durometers that are readily available. What about hard surfaces like anodize, chrome, ceramic or Teflon? The reality is that there are many options available to the end user. This paper will discuss some of these options and provide some guidance on how to make optimizing choices for your line.