Mechanical seals are devices that aid in connecting systems together to prevent leakage. Moreover, the mechanical seals aids in stopping leakages through means of holding pressure or even by eliminating contamination. The adhesion and compression of the mechanical seals are the main determinants of the competence of the mechanical seals. Before exploring how mechanical seals operates, It is very to understand other methods of forming a seal. Gland packing is one of the commonly used traditional seals. Gland packing looks like a rope like material that is braided and crammed around the shaft – physically padding the cavity between the shaft and the pump housing. However, people are switching to the mechanical seals due to numerous reasons. Gland packing seals are considered less effective since they need to press besides the shaft so as to lessen outflow, this implies that pump will require more power in order to turn the shaft hence wasting energy. On the other hand, the packing requires a large volume of water to cool the overheating shafts due to friction. Also, the friction of the rotating shafts results into wearing of the shafts in the long run thereby resulting in increased leakage. Also, it is very costly to repair the worn out shafts as a result of the friction between the rotating shafts.
There are numerous reasons as to why people prefer using mechanical seals. Mechanical seals do leak vapor when the fluid reaches the atmospheric side of the seal faces, hence there is no visible leak. In addition and the casing of the mechanical seals do not destroy the shaft of the pump. The mechanical seals can self-adjust themselves as their faces begin to wear due to friction, hence reducing the cost of daily maintenance. Furthermore, the Apex Cartridge mechanical seals use less water compared to the traditional seals and also there is less corrosion of a plant equipment in the event that the product is contained in the pump. A type of mechanical seal that is used in rotating gear, such as thrusts, blenders, blowers, and compressors is known as an end face mechanical seal. At times, the fluid leak out of the pump between the rotating shaft and the stationary pump casing when the pump functions. Moreover, the mechanical seal face geometry is considered to be the one of the most critical design elements within a mechanical seal. Some of the seal face properties include the balance diameter, the centroid setting, and the surface area. Additional seal properties consist of the surface finish, the drive mechanism, and the face topography.
Reference: check out here