A compound by Teknor Apex, Pawtucket, RI, and based on decades of development for high-performance electrical applications has been formulated to also meet stringent medical requirements for reliability, as well as cytotoxicity and chemical resistance. The high-purity Medalist MD458 compound for wire and cable features protective insulation and jacketing. It is designed to provide the same electrical performance and elevated service temperature rating as the supplier’s established Elexar EL8431 TPE in a medical-grade form. The durable compound has a Shore A hardness of 70 and a maximum continuous operating temperature rating of 105ºC (UL-1581). It also has a flammability classification of HB (UL-94) and has passed oil- and UV-resistance testing.