High purity silicon carbide micro powder is the basic raw material of pressureless sintered silicon carbide industrial ceramics. Silicon carbide powder D50 particle size is 0.5 um, high purity, small particle size, large specific surface area, high surface activity, purity is more than 98.5%. It is suitable for the production of various mechanical sealing ring, bearing, sleeve and other friction materials. These pressureless sintered silicon carbide (SSIC) ceramic products made from silicon carbide pressureless sintered powder are widely used in petrochemical, electric power, light industry, aerospace, automobile, paper making and sewage treatment and other industrial fields.When pressureless sintered SIC powder is paired with carbon graphite, the friction coefficient is the lowest,therefore it can be used for high parameter mechanical seals.