Answers

2016-04-01T20:14:16+05:30
graphite is preferred in brass locks and alike as oil can penetrate the closely moving parts, then if the oil drys up it welds the parts together and that's the end of it . graphite is a dry very fine powder. and acts like billions of tiny marbles. causing the surfaces to slip nicely..... no good in car engines though as it has little cooling properties and will not flow around the engine.
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