Cable Assemblies FEC manufactures cable assemblies utilizing mil-spec connectors (crimp or solder) per customer drawings. Backshell options range from our robust SCOLOR process with custom over-molding to shrink boots and with mechanical backshells. Common molded backshell materials include mil-spec polyurethane and neoprene and, for harsher environments, EPDM, Viton, Viton GLT, Hypalon, Silicone and Nitrile rubber. FEC specializes in manufacturing cable assemblies for CBRNNBC environments. FEC’s SCOLOR process, in conjunction with a machine-woven shield braid, ensures a 360° shield-to-shell termination producing less than 1 milliohm of resistance.