Products Description
Due to the fact that water pumps are mostly used to transport fluid media and have the characteristics of horizontal installation, high speed, high pressure, carrying solid particles, and strong corrosiveness, the main material of mechanical seals used in pumps often needs to resist the erosion and impact of solid particles, high-temperature abrasion of sealing surfaces caused by high speed, unstable sealing parameters caused by high pressure, and corrosion of substrate structural components. Therefore, high requirements are placed on the sealing material of mechanical seals, The commonly available materials for sealing surface friction pairs include nickel based hard alloy, cobalt based hard alloy, pressureless sintered silicon carbide, reaction sintered silicon carbide, impregnated graphite, PTFE filled graphite, PTFE filled glass fiber, aluminum oxide special ceramics, and so on; The substrate materials can be selected as 2Cr13 stainless steel, 301 stainless steel, 304 stainless steel, 316 stainless steel, 316L stainless steel, 904L stainless steel, polytetrafluoroethylene, etc; Spring compensation components can be made of materials such as Hastelloy, 1Cr18Ni9Ti, 3Cr13, etc;
Unlike mechanical seals used in kettles, the sealing media used in pump mechanical seals are mostly liquids, solid-liquid mixtures, and atmospheric gases; Mechanical seals for kettles are often used to seal high-pressure gases or gas-liquid mixtures, and leakage can pose a serious threat to the environment and organisms.
Mechanical seals for pumps are one of the precision and complex mechanical basic components, and are key components of pump machinery. Its sealing performance and service life depend on many factors, such as selection, machine accuracy, correct installation and use, etc. There are various types of mechanical seals used in pumps. The models vary, and their maintenance is also difficult to distinguish and judge.
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