8658Part #: 8658. Download. File Size: 123Kbytes. Page: 1 Pages. Description: Heyco-Flex™ I Liquid Tht Conduit. Manufacturer: Heyco..ENGAGE™ PV 8658 Polyolefin Elastomer? Ethylene-Octene Polyolefin Elastomer that offers excellent performance in electrical applications. Can be used as the base polymer in