The metal materials of floating seals are mainly represented by bearing steel, carbon steel, cast iron, nickel-chromium alloy cast iron, high-chromium molybdenum alloy, tungsten-chromium alloy cast iron alloy, nickel-based alloy, etc., and the addition of chromium, molybdenum, nickel and other elements will also be appropriately used. It can effectively improve the strength, wear resistance and corrosion resistance of the alloy, but it also increases the cost of raw materials. Therefore, the most appropriate material can also be selected based on the actual temperature, speed, corrosion, and maintenance requirements of the equipment.
Commonly used materials for floating oil seals include: nitrile rubber, fluororubber, silicone rubber, acrylic rubber, polyurethane, polytetrafluoroethylene, etc. When selecting a floating seal material, consider the material’s compatibility with the working medium, its adaptability to the operating temperature range, and the ability of the lip to follow the high-speed rotation of the rotating shaft. The temperature of the oil seal lip is 20-50°C higher than the temperature of the working medium. This should be noted when selecting materials.
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Post time: Aug-06-2024