P 0072 (OTTO) Polyethylene, average Mw ~4,000 Cas 9002-88-4 - used in a diverse range of applications. These include can- and bottle-handling machine parts, moving parts on weaving machines, bearings, gears, artificial joints, edge protection on ice rinks, steel cable replacements on ships, and butchers' chopping boards. P 0072 (OTTO) Polyethylene, average Mw ~4,000 Cas 9002-88-4 - used for the construction of articular portions of implants used for hip and knee replacements. As fiber, it competes with aramid in bulletproof vests.