Airtight Ethernet Chassis Connectors REAN Airtight Ethernet Chassis Connectors help designers add IP65 protection and air tightness to demanding applications. These connectors feature UL 94V-0 materials and a one-piece design with an integrated rubber cap that minimizes installation space requirements. REAN Airtight Ethernet Chassis Connectors feature a D-shape metal flange and are designed for operation over a -20°C to +70°C temperature range.