Rubber Insulating Gloves are designed and constructed to act as a barrier between the user and the energy/voltage,to insulate the user from electric shock. The ASTM D120 standard outlines the protection that the glove provides. The rubber gloves are thicker as their protection increases. The rubber gloves will provide protection against either Alternating Current (AC) as well as Direct Current (DC), up to the levels detailed in the standard as well as typically onthe labeling, which is required to be affixed to each glove. It is important NOT to exceed the USE voltage detailed to avoid injury.