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Bearing the characteristics of the commonly used rubber sealing material

by:Waxing     2020-09-18
Usually adopt nitrile butadiene rubber bearing rubber seal materials and fluorine rubber, its characteristics are as follows: nitrile butadiene rubber in the most widely used bearing rubber seal, its advantage is to most of the mineral oil and mineral oil, general fuel (grease Such as petrol, diesel and light heating oil) , animal and plant oil and fat, hot water good bear ability, and the use of nitrile butadiene rubber sealing lip can allow the lack of oil in a short time; Defect is relatively low working temperature, its working temperature is commonly - 40 ℃ ~ + 100 ℃ range, short-term can reach 120 ℃, beyond this temperature, nitrile butadiene rubber happens hardening and loss of performance. Fluorine rubber has the advantage of high temperature resistance and chemical corrosion resistance, and has good anti-aging properties, oil and hydraulic oil, fuel oil, lubricants, inorganic acid aliphatic hydrocarbon and aromatic hydrocarbon medium strong bear ability, which allows the highest working temperature is 200 ℃; Drawback is that in some amine ester, ether, acetone, and under the condition of high temperature of anhydrous hydrogen fluoride and other compounds, cannot use fluorine rubber; And when the temperature exceeds 300 ℃ above, can release harmful gases, so the fluorine rubber seal is absolutely cannot bear the high temperature above 300 ℃.
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