Sintered Silicon Carbide Ring

• Extremely high hardness
• Excellent wear resistance
• Excellent corrosion resistance
• Excellent thermal shock resistance
• High thermal conductivity
• Low thermal expansion
• Excellent high-temperature stability
• Low friction
• High dimensional stability
• Excellent resistance to abrasive materials
• Suitable for vacuum applications
• Custom dimensions available
• Precision-ground surfaces available
• Certificate of Analysis (COA) included

Property	Specification
Product Name	Sintered Silicon Carbide Ring
Material	Silicon Carbide (SiC)
CAS Number	409-21-2
Purity	Typically ≥98–99% SiC, Grade Dependent
Manufacturing	Pressureless Sintering / Custom
Appearance	Black / Dark Gray
Density	Typically ≥3.0 g/cm³
Hardness	Very High
Thermal Conductivity	Grade Dependent
Thermal Expansion	Low
Operating Temperature	Up to ~1,600°C+ in Suitable Atmospheres
Outer Diameter	Custom
Inner Diameter	Custom
Thickness	Custom
Surface Finish	As-Sintered / Ground / Lapped / Polished
Tolerance	Custom
Geometry	Ring / Washer / Custom
Packaging	Protective / Custom

• Pressureless-Sintered Silicon Carbide Rings
• Reaction-Bonded Silicon Carbide Rings
• High-Purity Silicon Carbide Rings
• Semiconductor-Grade SiC Rings
• Mechanical Seal SiC Rings
• Wear-Resistant SiC Rings
• High-Temperature SiC Rings
• Chemical-Resistant SiC Rings
• Furnace-Grade SiC Rings
• Custom Silicon Carbide Rings

1. What is a Sintered Silicon Carbide Ring?

A sintered silicon carbide ring is a ceramic ring manufactured by consolidating SiC powder through a controlled sintering process. It provides exceptional hardness, wear resistance, chemical resistance, and high-temperature performance.

2. Why is Silicon Carbide used for mechanical seals?

SiC offers excellent hardness, low friction, wear resistance, thermal conductivity, and chemical resistance, making it particularly suitable for demanding mechanical seal environments.

3. What temperatures can sintered SiC withstand?

Sintered SiC can operate at very high temperatures. Actual maximum temperature depends on grade, atmosphere, mechanical loading, geometry, and thermal conditions, with some grades suitable for temperatures exceeding 1,500°C.

4. Is Silicon Carbide resistant to chemicals?

Yes. Silicon carbide has excellent resistance to many acids, alkalis, molten salts, and corrosive environments, although compatibility should be evaluated for the specific chemical and operating temperature.

5. Can the SiC ring be precision ground?

Yes. Sintered SiC rings can be diamond ground, lapped, or polished to achieve tight dimensional tolerances and controlled surface roughness.

6. Can REG Metals manufacture custom SiC rings?

Yes. REG Metals can source custom rings according to outside diameter, inside diameter, thickness, tolerances, flatness, concentricity, surface finish, and special geometry.