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Application for Medalist MD458

While Medalist MD458 Elastomer Is Newly Formulated, It Is ‘an Exact Medical-Grade Analog’ to a Teknor Apex TPE with 20 Years of Successful Usage for Wire and Cable

ANAHEIM, CA, February 8, 2011: The first wire and cable compound in the Medalist® family of medical elastomers is formulated and produced in accordance with stringent medical-industry requirements yet draws on technology with a long track record of success in non-medical insulation and jacketing applications, it was announced at MD&M West by the Thermoplastic Elastomer Division of Teknor Apex Company (Booth 2233).

Like other Medalist elastomers, Medalist MD458 compound is a high-purity formulation that has passed ISO 10993-5 cytotoxicity testing, is RoHS and REACh compliant, and is manufactured in Teknor Apex’s dedicated medical compounding facility in St. Albans, VT. At the same time, the new compound provides the same electrical performance, elevated service temperature rating, and resistance to chemicals and sunlight as the company’s Elexar® EL8431, a thermoplastic elastomer (TPE) with more than two decades of service in wire and cable.

“As an exact medical-grade analog to a proven Elexar compound, Medalist MD458 draws on the extensive experience of Teknor Apex in serving both the electrical and medical sectors,” said Nick Sandland, senior medical market manager. “It is our belief that this new compound is the first elastomer to be fully compliant with the standards and practical performance requirements of both industries.”

Medalist MD458 has a Shore A hardness of 70, a flammability classification of HB (UL-94), and a maximum continuous operating temperature rating of 105 ºC (UL-1581). It has passed standard tests for oil resistance after seven days at 60 ºC and UV resistance after 720 hours. These properties lend themselves to applications in hospital and healthcare environments requiring excellent flexibility, durability, and chemical resistance.

An expandable registered binder with extensive data on all Medalist products is available to qualified OEMs, designers, and plastics processors in the medical device and healthcare product industries. It can be requested from the Medalist website at or by emailing Teknor Apex at


The Thermoplastic Elastomer Division of Teknor Apex Company is the most diversified manufacturer of TPEs, offering eight broad product families based on generically distinct chemistries and operating eight TPE plants in the U.S.A., Europe, and Asia. Headquartered in Pawtucket, Rhode Island, U.S.A., the Division is an international supplier to the appliance, automotive, construction, medical-device, wire and cable, and other consumer and industrial product industries. Other plastics businesses of Teknor Apex include the Bioplastics, Nylon, Specialty Compounding, and Vinyl Divisions and Teknor Color Company. Visit

READER INQUIRY INFORMATION: Americas: Teknor Apex, 505 Central Avenue, Pawtucket, RI 02861 U.S.A. Tel:1-401-725-8000. Tel. from U.S. only: 1-866-GET-TPEs (1-866-438-8737). Fax: 1-401-728-5680. E-mail: Europe: Teknor Apex UK, Ltd., Tat Bank Road, Oldbury, West Midlands, England B69 4NH. Tel: 44-121-665-2100. Email: Asia: Singapore Polymer Corporation, 41 Shipyard Road, Singapore 628134. Tel: 65-6265-2544. Fax: 65-6265-1821. Email: