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According to the shape, those seals are also called tungsten carbide mechanical sealrings. Due to the superiorities of tungsten carbide material, tungsten carbide mechanical seal rings shows high hardness, and the most important is that they resist corrosion and abrasion well. therefore, tungsten carbide mechanical sealrings are having wider use than seals of other materials.
Tungsten carbide mechanical seal is provided to prevent pumped fluid from leaking out along the drive shaft. The controlled leakage path is between two flat surfaces associated with the rotating shaft and the housing respectively. The leakage path gap varies as the faces are subjected to varying external load which tend to move the faces relative to each other.
The products require a different shaft housing design arrangement compared to that for the other type of mechanical seal because the mechanical seal is a more complicated arrangement and mechanical seal does not provide any support to the shaft.
Tungsten carbide mechanical seal rings come in two primary types:
Cobaltbound (Ammonia applications should be avoided)
Nickelbound (May be used in Ammonia)
Typically6% binder materials are used in tungsten carbide mechanical seal rings,although a wide range is available. Nickel-bonded tungsten carbide mechanical seal rings are more prevalent in the wastewater pump market due to their improved corrosion resistance compared with cobalt bound materials.
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No.007 Yujiachong Group, Qingcaochong Village, Xianyu Town, Hetang District, Zhuzhou, Hunan, 412000, China