SIC Mechanical Seal Faces


Pressureless sintered silicon carbide (SSIC) is the best friction materials for the mechanical seals of pumps and reactors in industries including automobiles, chemicals, oil refining, mining, and papermaking. Our Tecsic-BN (SSIC+BN) is more resistant to dry friction than Tecsic-CG (SSIC+Carbon Graphite).

Silicon Carbide Seal Face Features

  • High hardness makes it an extremely abrasion resistant material
  • High thermal conductivity, high tensile strengh and low thermal expansion makes it very resistant to thermal shock
  • Superior performance in environments of hot gasses and liquids including strong acids and bases, even at extremely high temperatures


  Tecsic-P (SSIC) Tecsic-BN (SSIC+BN)
Composition SiC 98% SiC 90%
Grain Size µm 5 6
Bulk Density g/cm3 3.1 2.8
Hardness HV 2600 2300
Compressive Strength MPa 3400 760
Flexural Strength MPa 400 230
Modulus of Elasticity GPa 425 280
Coeff of Thermal Exp 4.3x10-6 4.3x10-6
Thermal Conductivity (R.T.) W/m.K 104 110

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