EMT Gland Compression Connector, 4 inch Raintight, Insulated Throat, Material: SteelAppleton? and O-Z/Gedney? offer ETP? raintight 7000GSR Series steel EMT compression connectors. They are used to ground and secure EMT raceways to boxes and enclosures in wet conditions. The 7000GSR Series have a male NPS threaded hub and are available with or without an insulated throat.Also known as: 687855876693, 7400GSRT, 4ESIRTCN