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BS ISO 7120 Petroleum products and lubricants — Petroleum oils and other fluids — Determination of rust-preventing characteristics in the presence of water

Scope

This document specifies a method for evaluating petroleum oils and other fluids to indicate their effectiveness in preventing the rusting of ferrous parts should water become mixed with the oil/fluid. The method is for application to inhibited mineral oils including steam turbine oils, circulating oils and hydraulic oils and non-hydrocarbon fluids including fluids denser than water.

In many cases, such as in the gears of a steam-turbine, water can become mixed with the lubricant, and rusting of ferrous parts may occur. This test indicates the effectiveness of inhibited mineral oils aid in preventing this type of rusting.

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