Mar-Bal has been an innovative leader in the thermoset industry since 1970. Mar-Bal provides thermoset custom molded parts, standoff insulators, and molding compounds for electrical distribution, industrial automation control devices, and the appliance industry.Mar-Bal Standoff Insulators are molded from a flame retardant and track resistant glass reinforced thermoset polyester molding compound recognized for current carrying devices under UL Material Recognition Number E 80533 (N). They combine high mechanical strength with high arc resistance and dielectric properties at elevated temperatures and humidity. These shatter-resistant insulators meet the most exacting standards for a variety of applications.