Silicon Carbide Seal Ring
Edgetech Industries, Advanced Ceramics Division supplies high-quality and competitive price advanced Silicon Carbide (SiC) Seal Ring.
Silicon Carbide Seal Ring, SiC Ceramic Seal Rings
Silicon carbide (SiC) is a lightweight ceramic material with strength comparable to that of diamond, making it an ideal material for mechanical seal rings. The important characteristics of silicon carbide sealing rings are excellent wear resistance and corrosion resistance, and it has good sealing performance even in acid/alkali corrosive environments. In addition, it has high heat resistance and good thermal shock resistance, and its wear resistance and strength properties are still excellent at high temperatures. We provide Silicon Carbide Seal rings in the form of dynamic rings, static rings, flat rings, etc.
The material of the SiC Seal Ring can be reaction sintered silicon carbide (RBSiC) or pressureless sintered silicon carbide (SSiC). SSiC ceramics can work up to 1600℃, while RBSiC ceramics can only work below 1380℃. The sealing surface of silicon carbide sealing rings can be polished to a mirror surface to obtain satisfactory sealing performance.
Silicon Carbide Specifications
Edgetech Industries, an advanced ceramics division supplies silicon carbide seal rings with different materials to fulfill various requirements of our customers. We provide flat silicon carbide rings, single and double-stepped silicon carbide rings, and custom-manufactured silicon carbide rings with complex shapes.
| Type | Pressureless sintered SiC | Reaction Bonded SiC |
| Max. Working Temp. (`C) | 1600 | 1380 |
| Bulk Density (g/cm3) | 3.1 | 3.03 |
| Appearance Porosity | <0.2% | <0.1% |
| Hardness HRA | 92 | 100-12090 |
| Flexural strength (MPa) | 400 | 350 |
| Compressive strength (MPa) | 2200 | 2000 |
| Elasticity Modulus (GPa) | 410 | 360 |
| Thermal expansion (10^-6/C) | 4.0 | 4.5 |
| Thermal conductivity (W/mK) | 100-120 | 50-100 |
| Main characteristics | Fracture Toughness | Chemical Resistance |
Properties of silicon carbide sealing rings
-High strength at high temperatures
-Excellent wear resistance
-Low coefficient of thermal expansion
-High thermal conductivity
-Excellent thermal shock resistance
-High hardness
-Light weight due to low density
-Good corrosion resistance
Applications
-Mechanical seals
-Valve seats and bushings for valves
Packing
Our Silicon Carbide Seal Ring is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
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