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Hebei Hankai high pressure rotary shaft seals
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In addition to protecting the cylinder from contaminants, dust seals also help maintain the proper lubrication levels within the system. When dust and dirt particles enter the cylinder, they can mix with the hydraulic fluid and create abrasive sludge. This not only increases friction within the cylinder but also reduces the effectiveness of the lubrication, leading to increased wear on the moving parts. By keeping out contaminants, dust seals help ensure that the hydraulic system operates smoothly and efficiently.
Lithopone or sulphide of zinc white has been in general use for twenty years or more in many industries where a white pigment of considerable body or hiding power is required that is not subject to change like lead carbonate and has not the brittle character of zinc oxide, besides being sold at a lower figure than either of these. Nevertheless it is still comparatively new to the general painting trade. Because of our tariff protection its manufacture in this country has made great progress. Yet in spite of this and the duty imposed on it, the imports are still in excess of the quantity manufactured here. A short history of its origin will no doubt prove of interest to our readers.