Ben-Har ST is a braided, heat treated fiberglass sleeving made of continuous
filament E glass. Heat treated fiberglass sleevings were pioneered to provide the fray
resistance necessary in most assembly operations. The heat treatment burns off any
low temperature contaminants, insures purity and low off gas content and promotes
bonding or saturating where desired.
Ben-Har ST sleeving is a UL Recognized Component meeting VW-1 flammability
requirements. It is completely unsaturated and provides the greatest possible flexibility
with the absolute minimum organic content. Its fray resistance makes practical the
use of short lengths and the roundness of the sleeving greatly facilitates wire insertion.
The special heat treatment of the fiberglass braid prepares the sleeving for bonding
with epoxies, impregnants and varnishes resulting in a superior reinforcement
between the fiberglass and the encapsulant or varnish.
Ben-Har ST is not affected by temperatures up to
240ºC, and can withstand higher
temperatures up to the melting point of glass (760ºC.) The sleeving withstands
normal assembly handling, cut-through, and mechanical stress without the loss of
insulating capability, however performance is determined by wall thickness (about
1/64".) Ben-Har ST shows no effect when exposed to 10 megarads of radiation.
It has a nominal outgassing of 0.25% by weight after four hours at