A device equipped with a filter plate designed to be worn on the head to protect eyes, face, and neck from arc radiation, radiated heat, spatter or other harmful matter expelled during some welding and cutting processes. .
Helmets are generally constructed of pressed fiber or fiberglass insulating material. A helmet should be light in weight and should be designed to give the welder the greatest possible comfort. Some helmets have an optional “flip lid,” a dark filter plate covering the opening in the shield. It can be flipped up so the welder can see to chip slag from the weld and be protected from flying slag. Slag can cause serious injury if it strikes a person, particularly while it is hot. It can be harmful to the eyes whether it is hot or cold.