Design Features：
1. Dual-End Face and Buffer Gas Design: Utilizing two pairs of sealing end faces and equipped with buffer gas, this design enhances the reliability and safety of the seal. The buffer gas forms a stable gas film between the sealing end faces, effectively preventing process gas leakage while reducing friction and wear between the end faces.
2. Secondary Dry Gas Seal Protection: The secondary dry gas seal further improves the reliability of the seal, forming a dual protection mechanism. Even if a minor leak occurs in the primary seal, the secondary seal can promptly take effect, preventing the leak from escalating and ensuring the safety of equipment and the environment.
3. Balanced Structure Advantages: The balanced design allows the seal to adapt to high pressure changes, automatically balancing axial forces, reducing the specific pressure of the sealing end faces, lowering wear and heat generation, and extending the seal’s service life.
4. Multi-Spring Flexible Compensation: The multi-spring structure provides uniform spring force, flexibly compensating for wear on the sealing end faces and maintaining excellent sealing performance. Simultaneously, the multi-spring design also improves the seal’s stability and anti-interference capability.
5. Container-Type Integrated Design: The container-type structure integrates the sealing components into a relatively independent container, facilitating installation and maintenance. Meanwhile, this design also better protects the sealing components from external environmental influences, improving sealing reliability.
6. Spring Rotation and Ear-Shaped Drive: The spring rotation design ensures even force distribution during seal operation, reducing stress concentration. The ear-shaped drive ensures reliable connection and power transmission between the seal and the pump shaft, guaranteeing normal operation of the seal as the pump shaft rotates.
7. Distributed Flushing for Effective Cleaning: The distributed flushing system evenly distributes flushing fluid to the sealing face, effectively removing impurities and heat from the sealing area, maintaining cleanliness and cooling of the sealing face, and improving seal performance and reliability.
Operating Parameters：
- Wide Temperature Range: Stable operation within a temperature range of -40℃ to 260℃ (depending on material selection), maintaining good sealing performance in both low-temperature liquefied gas environments and high-temperature process conditions, adapting to various complex operating requirements.
- Wide Pressure Range: Capable of withstanding pressures from 0 to 3.0 MPa, meeting the sealing requirements of different pumps under various pressure conditions, ensuring reliable operation of the seal under different pressures and preventing media leakage.
- Strong Speed Adaptability: Suitable for operating conditions at speeds of 3600 rpm or 25 m/s, it can match the speeds of various pumps, ensuring stable operation and excellent sealing performance even during high-speed rotation.
Standards and Product Advantages：
- Strict Standard Adherence: Complies with industry standards such as API682 and JB/T4127.1, ensuring that the product’s design, manufacturing, and performance meet relevant international and domestic specifications, guaranteeing product quality and reliability.
- Environmental and Safety Advantages: The sealing medium will not leak into the atmosphere. Typically, minor internal leaks require venting to a flare system. The external seal uses nitrogen as a buffer gas, resulting in no visible leaks and is environmentally friendly. Furthermore, the 2CW-CS conforms to AP1682 standard layout mode 2, commonly used for flammable and explosive media such as light hydrocarbons and aromatics, providing a safe sealing solution for pumping hazardous media.
Applications：
Widely used in pumps for light hydrocarbons, aromatics, ethylene oxide, acetic acid, etc., in the petrochemical and coal chemical industries, as well as other rotating equipment. Among these key pieces of equipment, the pumping series dry gas seals play an important sealing role, ensuring the continuity and safety of production, and are an indispensable component in related industries.
