The MS E, R, and F connectors are similar to the MS A&B, but have resilient insulators and wire sealing grommets for extreme environmental conditions and high altitude sealing. The contacts are bonded to the insulator as well as the insulator to the shell for environmental sealing. The MS-R has a shorter, lighter weight endbell without the cable clamp. Bothe the MS-F and MS-R have o-rings to suppliment the interfacial seal. Shells are aluminum allow and gererally plated with OD Cad or our RoHS black zinc. The MS E, R, or F series is also available with crimp contacts using a modification code of F80 after the description.