Silicon Carbide Mechanical Seal

Semicorex is a large-scale manufacturer and supplier of Silicon Carbide Coated ceramic in China. We focus on semiconductor industries such as silicon carbide layers and epitaxy semiconductor. Our Silicon Carbide Mechanical Seal has a good price advantage and cover many of the European and American markets. We look forward to becoming your long-term partner.

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Product Description

Silicon Carbide Mechanical Seal must operate in challenging conditions, including high speeds, temperatures, and pressures, while remaining resistant to corrosion and wear. Semicorex technical Silicon Carbide Mechanical Seal feature the optimal toughness, stiffness, flexural strength, hardness, and corrosion resistance for mechanical seal faces. They are particularly well-suited for dry gas seal assemblies that require low deflection from high speeds and low thermal expansion from high temperatures.

Parameters of Silicon Carbide Mechanical Seal

Technical Properties
Index	Unit	Value
Material Name		Reaction Sintered Silicon Carbide	Pressureless Sintered Silicon Carbide	Recrystallized Silicon Carbide
Composition		RBSiC	SSiC	R-SiC
Bulk Density	g/cm3	3	3.15 ± 0.03	2.60-2.70
Flexural Strength	MPa (kpsi)	338(49)	380(55)	80-90 (20°C) 90-100(1400°C)
Compressive Strength	MPa (kpsi)	1120(158)	3970(560)	> 600
Hardness	Knoop	2700	2800	/
Breaking Tenacity	MPa m1/2	4.5	4	/
Thermal Conductivity	W/m.k	95	120	23
Coefficient of Thermal Expansion	10^-6.1/°C	5	4	4.7
Specific Heat	Joule/g 0k	0.8	0.67	/
Max temperature in air	℃	1200	1500	1600
Elastic Modulus	Gpa	360	410	240

The difference between SSiC and RBSiC:

1. Sintering process is different. RBSiC is to infiltrate free Si into silicon carbide at a low temperature, SSiC is formed by natural shrinkage at 2100 degrees.

2. SSiC have smoother surface, higher density and higher strength, for some sealings with more strict surface requirements, SSiC will be better.

3. Different used time under different PH and temperature, SSiC is longer than RBSiC

Features of Silicon Carbide Mechanical Seal

- Avoid peeling off and ensure coating on all surface
High purity: made by CVD chemical vapor deposition under high temperature chlorination conditions.
Corrosion resistance: high hardness, dense surface and fine particles.
Corrosion resistance: acid, alkali, salt and organic reagents
- Achieve the best laminar gas flow pattern
- Guarantee evenness of thermal profile
- Prevent any contamination or impurities diffusion

Available shapes of silicon carbide ceramics：

● Ceramic rod / ceramic pin / ceramic plunger

● Ceramic tube / ceramic bushing / ceramic sleeve

● Ceramic ring / ceramic washer / ceramic spacer

● Ceramic disc

● Ceramic plate / ceramic block

● Ceramic ball

● Ceramic piston

● Ceramic nozzle

● Ceramic crucible

● Other custom ceramic parts