IP67/68 Sealed Connectors & Cable Assemblies Amphenol RF Sealed Connectors and Cable Assemblies feature a variety of IP67 and IP68 solutions designed for a variety of harsh environment applications. These 50Ω and 75Ω impedance connectors are offered in a range of styles, including BNC, N-Type, SMA, TNC, 4.3/10, F-Type, HD-BNC, MHV, and QMA. Amphenol RF Sealed Connectors offer a maximum frequency of 500MHz to 18GHz.