Silicon Carbide Seal

  • Silicon Carbide Seal

The silicon carbide rings, bearings, bushings have the advantages of excellent thermal conductivity, self-lubricity, low thermal expansion. It can be widely used in the petroleum, chemical, food, machinery and motors industries. The friction between silicon carbide and carbon graphite is the least; so it is widely used as mechanical seals. Commonly Silicon Carbide are available in Alfa Sintered(SSIC) Grade and Reaction bonded Grade as per following specification.


Product Specification

Purity % >90 >98
Density g/cm2 >2.98 >3.10
Hardness Vickers 1kg kg/mm2 2200 2400
Moduls of Elasticity GPa 390 420
Fracture toughnees MPa*m1/2 4.3 4.5
Fracture Strength (MOR) MPa 420 450
Compressive Strength MPa 2500 3200
Thermal Expansion (CTE) 10-6/K 4.3 4.4
Thermal Conductivity w/(m-K) 120 140