Profile: Vulcan Dampers and Expansion Joints offers power facilities and heavy industry from conceptual design to project completion, vulcan dampers and expansion joints. Vulcan™ non-metallic expansion joints are designed for tough demanding industrial applications. Non-metallic expansion joints are designed for installation in systems ranging from ambient to high temperature. Types vary from U style with molded integral flanges, to units complete with flanged metal frames to which the flexible element is attached.