Si3N4 Silicon nitride ceramic sliding sleeve is a kind of high performance mechanical seal material, with strong wear resistance, corrosion resistance and high temperature resistance. Si3N4 ceramic sliding sleeve is made of silicon nitride powder, sintered at high temperatures. Silicon nitride cerami sleeve are widely used in various mechanical equipment, such as centrifugal pumps, mixers, compressors, mechanical seals and other fields. Its advantages include abrasion resistance, corrosion resistance, high temperature resistance, high hardness, high strength, low thermal expansion coefficient and good insulation performance.