A product designed to enhance and maintain the electrical contact between smooth surfaces of dissimilar materials eg. bolted terminations onto bus bars etc.
The bolted joint transition washer, designed and developed by the Central Electricity Research Laboratories, is manufactured by Sicame Electrical Developments Limited. The device consists of a sharply profiled copper alloy washer encapsulated in a protective grease. When inserted between the mating faces of a bolted joint the sharp profile penetrates surface oxide films and the grease is extruded to form a seal against corrosion.
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