Ben-Har Ex-Flex is a braided fiberglass sleeving which is heat treated and saturated to prevent end fray and increase ease of handling. If subsequent service or accidental temperatures exceed 240 °C, the saturant will gradually volatize without toxic or excessive fumes or smoke. - This product was developed to meet end fray resistance needs of most assembly operations and for high-temperature applications where ordinary film varnish and impregnates cannot be used.