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SC0894 Silicon Carbide Seal Ring, SiC Seal Ring

Silicon Carbide Seal Ring Properties

Silicon Carbide Seal Ring

Compound Formula SiC
Molecular Weight 40.1
Appearance Black
Melting Point 2,730° C (4,946° F) (decomposes)
Density 3.0 to 3.2 g/cm3
Electrical Resistivity 1 to 4 10x Ω-m
Poisson’s Ratio 0.15 to 0.21
Specific Heat 670 to 1180 J/kg-K



Download Silicon Carbide SDS 


Silicon Carbide Seal Ring Description

Silicon carbide (SiC) is a lightweight ceramic material with high strength properties comparable to diamond. It has excellent thermal conductivity, high mechanical strength, low thermal expansion, chemical resisitance and thermal shock resisitance. Silicon carbide is an excellent ceramic material for applications requiring good erosion and abrasive resistance. Consequently, it is useful in a variety of applications including spray nozzles, shot blast nozzles and cyclone components.

Silicon carbide materials are ideal for sealing rings and bearings. Silicon carbide seal rings have excellent corrosion resistance, great mechanical strength under high temperatures and great wear resistance. We supply multiple sizes of silicon carbide rings as well as other SiC parts.

Silicon Carbide Seal Ring Specifications

Advanced Ceramic Materials (ACM) 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.




Sintered Silicon Carbide (S-SiC)

SMB1  Basic pure SiC

Purity of SiC > 98%

Hv: 26 GPa

SMG1  Graphite impregnated

15%~20% content of Graphite

SMP1  Porous

Better friction resistance

Reaction Bonded Silicon Carbide (RB-SiC)

SMB2  Basic SiC

Purity of SiC > 88%

SMG2  Graphite impregnated

20%~30% content of Graphite


Silicon Carbide Seal Ring Applications

-Semiconductor and coating.
-Continuous-flow reactors, heat exchangers, etc.
-Mechanical seals, bearings, thrust bearings, etc.
-Mirrors for industrial laser systems.

Packing Service

ACM’s silicon carbide seal rings are 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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Silicon Carbide (SiC) Seal Ring
Average rating:  
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by Charles Badham on Silicon Carbide (SiC) Seal Ring

Hard to give these a bad a rating, exactly what I was looking for.