About Internal Face Spring Seals
Internal Face Spring Seals are sealing elements used to seal mechanical equipment. It is often used to prevent liquid or gas leaks and provide a seal between a rotating shaft or piston and a fixed component. Suitable for high-speed rotating shafts or high-pressure applications such as centrifugal pumps, compressors, automotive engines and hydraulic systems. They are able to withstand higher pressures and temperatures while having lower friction losses and good sealing properties.
Special Features
■ Internal Face Spring: Internal face springs are a unique component of internal face spring seals compared to traditional seals. The existence of the spring enables the sealing ring to provide continuous pressure to ensure the reliability and integrity of the seal. Internal face springs also adapt to axial and radial movement, as well as changes in temperature and pressure, maintaining sealing performance.
■ Accommodates high speeds and high pressures: Internal face spring seals are typically used in high-speed rotating shafts or high-pressure applications such as centrifugal pumps and compressors. They can withstand the requirements of high-speed rotation and high-pressure environments and maintain stable sealing performance.
■ Good wear resistance: Internal face spring seal is usually made of wear-resistant materials, such as polyurethane. This enables the seal to resist wear and tear and leakage problems caused by wear and tear over a long period of time, extending the life of the seal.
■ Low friction losses: The design of the internal face spring seal reduces friction losses when in contact with the rotating shaft or piston, thereby reducing energy loss and heat generation. This is very important for the operation of high-performance machinery and equipment.
■ Tolerance: Because internal face spring seals can adapt to axial and radial movements, as well as changes in temperature and pressure, they have a certain tolerance for slight deviations in the operation of mechanical equipment. This provides greater operational flexibility and reliability.
Sealing Principle
The sealing principle of the internal face spring seal is based on the synergistic effect of the sealing ring and the internal face spring. The following is its sealing principle:
1. Initial contact: When the rotating shaft or piston of the mechanical equipment comes into contact with the fixed component, the sealing ring is in initial contact. In this state, the inner surface of the sealing ring is in contact with the rotating shaft or piston surface, but it is not completely sealed.
2. Spring compression: As the rotating shaft or piston moves, the sealing ring is under pressure, and the internal surface spring begins to be compressed. The function of the spring is to provide additional pressure, pushing the sealing ring into closer contact with the rotating shaft or piston surface.
3. Pressure equalization: When the internal surface spring is compressed, it will generate a reverse force that offsets the pressure of the rotating shaft or piston. This balanced effect enables the sealing ring to maintain stable sealing performance under different pressure conditions.
4. Compression and sealing: As the internal face spring is further compressed, the contact between the sealing ring and the rotating shaft or piston surface becomes closer. This close contact creates an effective sealing interface that prevents liquid or gas leakage.
In general, the internal face spring seal achieves sealing of the rotating shaft or piston through the compression force of the internal face spring and the elasticity of the sealing ring. The spring provides continuous pressure to ensure close contact between the sealing ring and the working surface, thereby achieving a reliable sealing effect.
Application Scenarios
1. Centrifugal pump: Centrifugal pump is a common equipment used to transport liquids. The internal face spring seal can be used to seal between the rotating shaft of the pump and the pump body to prevent leakage of liquid in the pump.
2. Compressor: The compressor is used to compress gas or liquid. The internal face spring seal can be used to seal between the piston of the compressor and the compressor shell to ensure efficient operation of the compressor.
3. Automobile engine: Effective sealing is required between the piston and the cylinder wall in the automobile engine to ensure that the pressure in the combustion chamber does not leak. Internal face spring seals provide reliable sealing in high temperature and pressure environments.
4. Hydraulic system: Valves and pistons in hydraulic systems need to be sealed to prevent fluid leakage. Internal face spring seals can be used at critical sealing points in hydraulic systems to ensure proper system operation.
5. Rotating shaft seal: Internal face spring seal is suitable for various rotating shaft sealing applications, such as motors, wind turbines, rotating machinery, etc. They provide reliable sealing performance under high-speed rotation conditions.
Why Choose Linde?
The company has more than 40 years of experience in designing rubber formulas, with about 2,000 formulas and more than ten materials including NBR, EPDM, VITON, SILICONE, NR, HNBR, etc. Comply with 85% automotive material specifications and UL/NSF/FDA/KIWA/TUV and other certification requirements. The company has an independent and complete formula testing laboratory that can be customized according to customer needs.
The company has successively passed international quality system certification ISO9002/QS9000, environmental management system ISO14001 and international automotive industry quality system IATF16949 certification. In addition to complying with general standards (such as ISO3601), dimensional tolerances and appearance can be customized to fully meet the different needs of customers. We have more than 10 years of experience in supplying zero-defect O-Rings to European customers and supplying zero-defect customized products to European, American and Japanese car manufacturers.
Quality Products
LINDE was the supplier to offer a full range of materials that meet the latest SAE spec AMS3678, which requires a high degree of testing and certification to meet the needs of our most discriminating customers.
Fast Turnaround
We understand your time is valuable. That’s why we work to get your product designed and delivered fast, eliminating downtime and saving you money.
Competitive Pricing
We stay ahead of the game with the best prices for the best quality products in the industry.
