Electriflex NG214B High Voltage Lineman Gloves Class 2 Salisbury production facilities manufacture rubber insulating gloves that comply with the highest possible standards and regulations. Salisbury rubber insulating gloves have earned the reputation for superior performance – meeting and exceeding the requirements for current ASTM D120 specifications. Our gloves are tested following ASTM D120/IEC903 specifications. Voltage Gloves Manufactured with Pride in America. SALISBURY is the global leader in the manufacture of electrical insulating rubber gloves.