As a trusted technical partner specializing in cartridge mechanical seals, FBU has developed the Series 2550 Mechanical Seal to meet the operational needs of core equipment in the pulp and paper industry. Custom-designed specifically for KADANT® UV Series Pressure Screens, this product focuses on sealing protection for general operating conditions in papermaking production. With its rigorous structural design, it adapts to the operational characteristics of the equipment, providing paper enterprises with a stable and reliable sealing solution to support the efficient and smooth operation of papermaking production lines.
I. Product Positioning: Specialized Seal for Pressure Screens in the Pulp and Paper Industry
The Series 2550 Mechanical Seal is a specialized R&D achievement of FBU based on the production scenarios of the pulp and paper industry. It precisely matches the structure and operational requirements of KADANT® UV Series Pressure Screens. Its design is fully centered on the medium characteristics and equipment operating conditions of papermaking production, aiming to provide practical sealing support for pressure screens—a key piece of equipment in the papermaking process—and avoid production interruptions caused by seal failure.
II. Core Structural Design: Stable Protection for Adaptable Operating Conditions
(1) Static Compensation Seal Face + Balanced Design
The Series 2550 adopts a static compensation seal face and balanced structural design, which aligns with the operating characteristics of general working conditions in the pulp and paper industry. It can effectively adapt to pressure fluctuations during equipment operation, ensure the fit and operational stability of the seal face, reduce seal wear, and extend the service life of the product.
(2) Multi-Spring Compensation Structure
Equipped with a multi-spring compensation structure, the product delivers stable spring compensation performance. During long-term continuous operation of the equipment, it can continuously provide uniform compensation force to the seal face, adapting to the continuous operation needs of papermaking production lines, maintaining the stable state of the sealing system, and reducing maintenance costs.
III. Application Adaptability: Covering Mainstream Flushing Plans and General Operating Conditions
The Series 2550 Mechanical Seal is suitable for general operating conditions in the pulp and paper industry and is compatible with various mainstream industrial seal flushing plans. Different flushing plans can be flexibly selected according to actual on-site conditions such as medium temperature and cleanliness, meeting the diverse on-site configuration needs of paper enterprises. The specific adaptation plans are shown in the table below:
| Flushing Plan | Adaptable Operating Characteristics |
| Plan 11 | Relies on self-flushing of medium from the pump outlet, suitable for clean medium conditions, featuring simplicity, reliability, and easy maintenance. |
| Plan 21 | Adds a heat exchanger based on Plan 11, suitable for medium conditions with relatively high temperatures, effectively reducing the temperature of the seal face. |
| Plan 32 | Adopts a continuous supply of external flushing fluid, suitable for conditions with slight impurities or special media, ensuring sealing effectiveness. |
IV. Model Specifications: Fully Covering KADANT® UV Series Pressure Screens
The Series 2550 Mechanical Seal includes multiple models, which can fully adapt to different specifications of KADANT® UV Series Pressure Screens. Enterprises can select the matching seal model according to the specific specifications of the KADANT® UV Pressure Screens they use, ensuring precise adaptation between the sealing system and the equipment. The specific model specifications are shown in the table below:
| Series 2550 Models | Adaptable KADANT® UV Series Pressure Screen Specifications |
| UV200 | KADANT® UV200 Series Pressure Screens |
| UV300 | KADANT® UV300 Series Pressure Screens |
| UV400 | KADANT® UV400 Series Pressure Screens |
| UV500 | KADANT® UV500 Series Pressure Screens |
| UV600 | KADANT® UV600 Series Pressure Screens |
V. FBU: Your Trusted Sealing Technology Partner – Professional Support and Reliable Guarantee
FBU has always positioned itself as a "sealing technology partner," providing professional mechanical seal products and technical services for various fields including the pulp and paper industry. From R&D and production to testing, the Series 2550 products adhere to strict quality control standards to ensure stable performance and strong adaptability. Meanwhile, we provide customers with targeted technical consultation, selection guidance, and after-sales support, helping paper enterprises solve practical problems in seal applications and working together to ensure the stable operation of production lines.
