What Are Mechanical Seals For Pumps?

  mechanical seal for pumps refers to a device installed and operated in pump equipment to play a dynamic sealing role to prevent the fluid medium in the pump volute from flowing out of the pump through the pump shaft; Due to the characteristics of installation, high speed, high pressure, solid particles, and strong corrosion, the main material of the mechanical seal for pumps often needs to resist the erosion and impact of solid particles, the high temperature abrasion of the sealing surface caused by high speed, and the sealing caused by high pressure. Influenced by unfavorable factors such as unstable parameters and corrosion of base structural parts, higher requirements for mechanical seal sealing materials are required. Usually, the optional materials for the sealing surface friction pair include nickel-based cemented carbide, cobalt-based cemented carbide, and pressureless sintered silicon carbide. , Reaction Sintered Silicon Carbide, Impregnated Metal Graphite, PTFE Filled Graphite, PTFE Filled Glass Fiber, Al2O3 Special Ceramics, etc. 316 stainless steel, 316L stainless steel, 904L stainless steel, PTFE, etc.; optional materials for spring compensation parts are Hastelloy, 1Cr18Ni9Ti, 3Cr13, etc.

  Different from mechanical seals for kettles, the sealing media of mechanical seals for pumps are mostly liquids, solid-liquid mixtures, and atmospheric gases; while mechanical seals for kettles are mostly used to seal high-pressure gas or gas-liquid mixtures, and leakage will cause serious damage to the environment and organisms. threaten.