Hermetically sealed electrical penetrator assembly

An electrical penetrator device, comprising:

• an outer housing of non-conductive, insulating material having a through bore and opposite first and second ends;
• at least one conductive pin of a first conductive material formed in one or two parts extending through the housing and having a first end portion and a second end portion extending out of the respective first and second ends of the housing, the first and second end portions terminating at respective first and second end faces;
• a first cladding layer bonded over at least part of the first end portion of the at least one conductive pin to cover the first end face and exposed outer surfaces of the at least one conductive pin outside the first end portion of the housing to form a first bonded assembly;
• and
• a second cladding layer bonded over the second end portion of the at least one conductive pin to cover the second end face and exposed outer surfaces of the at least one conductive pin outside the second end portion of the housing to form a second bonded assembly, the material of the first and second cladding layers comprising a corrosion resistant conductive material different from the first conductive material.