Overview of Bearing & Wear. — Bearing and wear-resistant plastics materials such as Delrin, HENAN Okay, Vespel, Meldin, Acetron, Torlon, Turcite, Rulon, UHMW, Fluorosint , and Tivar are available from Professional Plastics. Wear is often severe in bearing-type applications. Rods that slide through glands, rolling element