Advanced Technical Ceramics, Precision Alumina, Silicon Carbide, Crucible Parts
Silicon Nitride Ceramic Sealing Ring Si3N4 Seal Washer
PRODUCT PARAMETERS
Description
Silicon Nitride Seal Ring is a high-performance ceramic sealing component manufactured from advanced silicon nitride (Si₃N₄) material. It features high density, excellent hardness, and outstanding mechanical strength, providing reliable sealing performance under demanding industrial conditions. With excellent wear resistance, corrosion resistance, and dimensional stability, the Si₃N₄ ceramic seal ring is widely used to prevent liquid and gas leakage in chemical equipment, pumps, valves, and other sealing systems requiring long service life and high reliability.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Silicon Nitride Seal Ring |
| Material | Silicon Nitride (Si₃N₄) |
| Density | ≥3.2 g/cm³ |
| Vickers Hardness | HV ≥1500 |
| Flexural Strength | ≥600 MPa |
| Compressive Strength | ≥2500 MPa |
| Elastic Modulus | 290 GPa |
| Thermal Expansion Coefficient | 3.1 × 10⁻⁶/℃ |
| Thermal Conductivity | 15-20 W/(m·K) |
| Maximum Operating Temperature | 1200℃ |
| Chemical Resistance | Excellent resistance to corrosion and oxidation |
| Surface Finish | Available with precision machining according to requirements |
Product Advantages
1. Excellent Wear Resistance
Silicon Nitride Seal Ring features extremely high hardness with Vickers hardness reaching HV≥1500. It can effectively resist friction, abrasion, and mechanical wear during long-term operation. This helps extend the service life of sealing components and reduce maintenance frequency.
2. High Mechanical Strength and Durability
With a flexural strength of ≥600 MPa, the ceramic sealing ring maintains excellent structural stability under pressure and mechanical stress. The high-strength Si₃N₄ material prevents deformation and cracking during operation. It is suitable for sealing applications requiring high reliability.
3. Superior Corrosion Resistance
Silicon Nitride ceramic has excellent resistance to chemical corrosion, oxidation, and harsh operating environments. The seal ring can maintain stable performance when exposed to various industrial media. It is especially suitable for chemical equipment requiring long-term sealing protection.
4. Reliable Sealing Performance
The Si₃N₄ ceramic seal ring provides high dimensional accuracy and excellent structural stability. It effectively prevents leakage of liquids and gases during equipment operation. The material helps maintain consistent sealing performance under continuous working conditions.
5. Excellent Thermal Stability
Silicon Nitride has a low thermal expansion coefficient, allowing the seal ring to maintain dimensional stability under temperature fluctuations. It can withstand repeated heating and cooling cycles with reduced risk of deformation. This improves equipment reliability in high-temperature applications.
6. Precision Customization Capability
Silicon Nitride Seal Rings can be manufactured in different sizes, thicknesses, and structural designs according to customer requirements. Precision machining ensures accurate fitting with sealing systems. Customized solutions help meet different industrial equipment requirements.
Typical Applications
1. Chemical Equipment Sealing Systems
Silicon Nitride Seal Rings are widely used in chemical equipment to prevent liquid and gas leakage. Their excellent corrosion resistance allows stable operation in contact with chemical media. They provide reliable sealing solutions for demanding industrial environments.
2. Pumps and Valves
Si₃N₄ ceramic sealing rings are used in pumps and valves where high wear resistance and dimensional stability are required. They help maintain tight sealing during continuous operation. The high hardness material reduces wear caused by friction and improves equipment lifespan.
3. Industrial Fluid Control Equipment
The ceramic seal ring is applied in fluid handling systems to ensure effective sealing performance. It can withstand pressure changes and harsh working conditions. Its stable mechanical properties make it suitable for precision sealing components.
4. High-Temperature Industrial Machinery
Silicon Nitride Seal Rings are suitable for equipment operating under elevated temperatures and thermal cycling conditions. The low thermal expansion coefficient helps maintain sealing accuracy. They provide reliable performance in high-temperature environments.
5. Precision Mechanical Equipment
Due to its high hardness, strength, and wear resistance, Si₃N₄ sealing rings are used in precision mechanical systems. They provide long-term operational stability and reduce component replacement requirements. The material is ideal for applications requiring high accuracy and durability.
Company Profile
Luoyang JianXun Tech Co., Ltd. specializes in the research, development, production, and supply of advanced ceramic materials and high-performance industrial components. The company provides silicon nitride ceramics, aluminum nitride ceramics, boron nitride products, alumina ceramics, and customized ceramic parts for global industrial applications. With professional manufacturing technology and strict quality control, JianXun delivers reliable ceramic solutions featuring high temperature resistance, wear resistance, corrosion resistance, and precision performance.
Payment Terms: T/T, PayPal, Credit Card, Western Union, etc.
Shipment Terms: By air, by sea, by express, or according to customer request.
Storage Conditions: Store Silicon Nitride Seal Rings in a dry, clean, and dust-free environment. Keep the products in protective packaging before use to avoid scratches, contamination, or mechanical damage that may affect sealing performance.
FAQ about Silicon Nitride Seal Ring
Q1: What is Silicon Nitride Seal Ring used for?
Silicon Nitride Seal Ring is mainly used for preventing liquid and gas leakage in chemical equipment, pumps, valves, and other industrial sealing systems. It provides reliable sealing performance under harsh operating conditions.
Q2: Why is silicon nitride suitable for sealing applications?
Silicon nitride has high hardness, excellent wear resistance, strong mechanical strength, and outstanding chemical stability. These properties allow the seal ring to maintain long-term performance in demanding environments.
Q3: Can Silicon Nitride Seal Rings be customized?
Yes, JianXun can provide customized silicon nitride seal rings with different dimensions, tolerances, surface finishes, and designs according to specific application requirements.
Q4: What advantages does silicon nitride ceramic have compared with metal sealing materials?
Silicon nitride ceramic offers higher wear resistance, better corrosion resistance, and lower thermal expansion compared with many traditional metal sealing materials. It can maintain stable performance in harsh industrial environments.
Q5: How should Silicon Nitride Seal Rings be stored?
The seal rings should be stored in a dry and clean environment with proper protective packaging. Avoid impact, moisture, and contamination to maintain product quality before installation.
