Mechanical seal is the most popular rotating seal solution in industrial centrifugal pumps. The seal helps prevent liquid leakage into the environment, reduces product loss, limits axle wear and ensures factory safety. Compared to gland packing, the mechanical seal leakage is much lower, consumes less power and needs less maintenance.
The pad consists of a sealing side rotating with the axis and a sealing side stationary attached to the pump body. The two sides are pressed together by a furnace or a pipe, between which is an ultra-thin fluid film and both lubricating and sealing. The flatness of the pad and the quality of the fluid film directly determine the life of the pad.
Silikon carbide, tungsten carbide, carbon graphite or ceramic are commonly used. Subsequent sealing can be FKM, EPDM, PTFE or FFKM. The choice of material depends on temperature, corrosion, viscosity and particle content in the leather material.
With pumps in the petroleum and petrochemical industries, debris and auxiliary systems are typically designed in accordance with API 682 (ISO 21049). This standard specifies classification, installation configurations and discharge, cooling, piping plans to increase reliability and debris life.
To choose the right pump, it is necessary to know: the type of pump and the size of the axle, the speed of rotation, the pressure and temperature of the chamber, the composition and viscosity of the material, the content of solid particles and the requirements for emissions.
SNS-VN supports the selection, supply and maintenance of mechanical waste for a wide range of pumps in the oil, gas, petrochemical, chemical and power industries. Contact us for advice and quote.