Pressureless Sintered Silicon Carbide (SSiC) Rings: Superior
Performance for Extreme Industrial Applications
Description:
Pressureless Sintered Silicon Carbide (SSiC) Mechanical Seal Rings are a breakthrough in advanced ceramic engineering, delivering
superior performance in the most demanding conditions. Manufactured
through a high-temperature, pressureless sintering process, these
rings achieve a fully dense, pure silicon carbide structure with
zero free silicon content. This ensures exceptional chemical
purity, outstanding thermal resilience, and superior mechanical
strength, making them the ideal choice for aggressive chemical,
high-purity, and ultra-high-temperature applications.
Typical Application:
Chemical Processing: Ideal for seals in pumps and valves handling concentrated acids,
alkalis, and aggressive solvents.
High-Purity Industries: Perfect for semiconductor manufacturing equipment, where
contamination from free silicon or metals must be eliminated.
Thermal & Heat Treatment: Suitable for furnace components, radiant tubes, and
high-temperature fan seals.
Abrasive & Erosive Services: Excellent performance in abrasive slurry pumps and equipment
handling particulate-laden fluids.
With exceptional hardness, unmatched chemical inertness, and
reliable performance under extreme temperatures, SSiC mechanical
seal rings ensure minimal maintenance, extended service life, and
superior operational reliability—even in the most challenging
environments.
Feature:
Ultra-High Hardness: Exceptional resistance to abrasive wear and mechanical erosion.
Excellent Thermal Stability: Maintains structural integrity and strength at temperatures
exceeding 1600 °C.
Outstanding Chemical Resistance: Highly inert to strong acids, alkalis, and oxidizers, ensuring
long-term performance in corrosive environments.
Superior Thermal Shock Resistance: Withstands rapid temperature fluctuations without cracking or
degradation.
High Purity & Full Density: The pressureless sintering process delivers a non-porous,
binder-free microstructure with no free silicon, preventing
contamination and enhancing corrosion resistance.
The physical properties of pressureless sintered silicon carbide
ceramics products:
| Physical properties | Unit | SSiC |
|---|
| Composition:SiC | Vol% | ≥98 |
| Open Porosity | Vol% | ≈0 |
| Density 20 ℃ | g/cm3 | ≥3.06 |
| Hardness | Rockwell Hardness 45N | R45N | 93 |
| Vickers Hardness HV1 | kg/mm2 | 2350 |
| Thermal Conductivity | 20°C | Wm-1K-1 | 196 |
| 1200°C | Wm-1K-1 | 60 |
| Coficient of Thermal Expansion | 10-6K-1 | 4.0 |
| Flexural Strength | 20°C | MPa | 320-400 |
| 1300°C | MPa | 300-400 |
| Modulus of Elasticity @ RT | GPa | 410 |
| Thermal shock resistance | ℃ | 1650 ＞350 |
| Max. Service Temp (air) | ℃ | 1650 |
Product sizes:
Customizable dimensions available to meet specific application
requirements.
Manufacturing Process:
Pressed α-SiC powder, combined with specialized additives,
undergoes a high-temperature reaction to form a fully densified
β-SiC structure through pressureless sintering.
Advantages & Value:
Our sintered silicon carbide mechanical seal rings provide
unmatched reliability in extreme operating conditions. The
pressureless sintering process produces a fully densified ceramic
material that excels beyond traditional sealing solutions in:
l Corrosive chemical handling
l High-temperature operations
l Abrasive and particle-laden fluid applications
l Critical sealing scenarios
Trusted by engineers worldwide, our SSiC rings deliver:
l Maximum chemical resistance
l Exceptional wear and abrasion performance
l Superior thermal shock resistance
l Long-term reliability
l Reduced maintenance and downtime
Let us help you enhance performance and durability—choose SSiC
mechanical seal rings for unparalleled sealing solutions.
