TRANSITION WASHER

The bolted joint transition washer, designed and developed is manufactured for electrical joints. The device consists of a sharply profiled copper alloy washer. When inserted between the mating faces of a bolted joint the sharp profile penetrates surface oxide films. Special backing washers are also supplied to ensure an even distribution of the clamping load at the interface. Designed primarily for aluminium conductors, the washer provides a stable corrosion-resistant interface between aluminium and other metals, such as copper or tinned copper. It enables bolted electrical joints to be rapidly assembled without the requirement for extensive preparation. The electrical and physical stability of the washer offers a significant improvement in reliability over traditionally abraded interfaces, and effectively prevents thermal runaway and ultimate breakdown. The transition washers are supplied coated with Shell Ensis 2462, surface protection oil complete with the correct backing washers.