IP67 rated caps are available for SMA, N Type and TNC interface types to help prevent the build-up of moisture, dust, and dirt collecting in the mating face of the connector. Options include with or without chain attachment. Non-waterproof BNC compatible caps are also available.
BNC Metal Protective Cap with Gasket and Chain for BNC Bulkhead Jack
BNC Metal Protective Cap with Gasket for BNC Bulkhead Jack