(#ESR-HUB) The Steritort Hub is an 18-circuit "hub" that can be installed into an FMC Steritort for conducting heat penetration testing. The hub comes with 18 Surface Mount Connectors mounted in the hub, with 5' wire attached to each connector. This allows the use of up to 18 Rotary Contactors/Leads to connect to the connectors. The design of the hub incorporates a 1-1/4" NPT stainless steel pipe nipple which threads into the shaft of the Steritort. The hub also comes with 18 Protective Caps for the connectors when not in service.