MECHANICAL SEAL
Welcome to FBU Mechanical Seal Company – delivering high-performance mechanical seals and sealing support systems since 2007.With advanced production and testing facilities and a dedicated R&D team, we provide reliable solutions for global industries, ensuring safety, efficiency, and smooth operation.
Products Introduce
As a professional mechanical seal manufacturer in China, FBU provides a full range of sealing solutions including API 682 4th Edition seals, standard cartridge seals, engineered seals, seals for mixers and agitators, seals for pulp and paper, and component seals. With reliable performance and flexible designs, our products are widely applied in petrochemical, pulp & paper, pharmaceutical, metallurgy, food, power generation, and wastewater treatment industries, helping customers achieve safe operation, reduced downtime, and long-lasting sealing efficiency.
Product Center
Product Advantages
Advanced Manufacturing & Quality Assurance
Powered by U.S. CNC equipment, FBU’s smart factory delivers high-precision mechanical seals with machining tolerances below 0.01mm and 97.2% equipment uptime. Seamless cloud-to-machine programming eliminates manual errors, while real-time equipment diagnostics and predictive maintenance ensure stable, efficient production. Centralized performance dashboards continuously monitor and optimize processes, providing consistent, high-quality seals you can rely on.
Reliable & Versatile Seal Design
Featuring a modular cartridge design with an integrated impeller spacer ring, our mechanical seals provide efficient and dependable sealing across a wide range of applications. Optimized for compatibility, they are available in sizes 30, 40, 50, 60, 80, and 90, with an inclined bolt hole arrangement that ensures precise installation and superior performance, including for Sulzer® AHLSTAR pump chambers. Built for durability, these seals support safe, efficient, and long-term operation in demanding industrial environments.
Successful Cases
Seal for Ebara® hot water circlation
In 2022, FBU successfully retrofitted a EBARA@-brand hot water circulation pump for a customer at a copper smelting plant. We provided PVES engineering seals and HEF heat exchangers, and the equipment is still in normal operation to date.
Seal for WARMAN®-brand Slurry Pumps
From 2020 to 2024, FBU upgraded six WARMAN® slurry pumps at a copper smelting plant with APOG-FB seals (HAST.C276 components) and the THS support system, achieving a seal service life far beyond customer expectations.
Seal for Sulzer® BB2 Pumps
In 2024, Cabot® selected FBU mechanical seals to replace John Crane® seals in its bare pump retrofit project. Our APOG-FL products passed type testing at the Sulzer factory and now operate stably at Cabot’s China facility.
Seal for FLOWSERVE® BB2 pump
FBU solved the sealing challenge of a FLOWSERVE® BB2 pump handling PX media (180°C, 2.5MPa) at a PTA plant by using APOG mechanical seals and the WED950 support system, eliminating leakage risks and ensuring long-term stable operation.
Why Choose Us
We provide a three-year warranty and accept customized orders, ensuring peace of mind for every client.
We collaborate closely with customers to engineer mechanical seals tailored to their specifications. Our solutions are optimized for performance and reliability, with ongoing technical support after delivery to ensure smooth operation in all applications.
Every stage of production, from raw materials to final assembly, undergoes rigorous testing and quality checks. By implementing full-process inspections, we guarantee that each mechanical seal meets strict standards for reliability, durability, and consistent performance.
Equipped with fully imported, high-end CNC machinery, our production lines achieve precise tolerances and stable manufacturing processes. This advanced equipment ensures that every seal we produce maintains high-quality craftsmanship and consistent results.
Our factory maintains a well-stocked inventory of critical components and parts, allowing us to fulfill orders quickly and meet urgent production needs. This ensures timely delivery and smooth supply chain management for our global customers.
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Thank you for your long-standing trust and support in FBU. To further strengthen your brand and market position, we have comprehensively upgraded our service policy and are now officially launching the "Quality & Speed Service (QSS)" plan, offering a 3-year warranty and 7-day shipping. This initiative is designed to provide you with more reliable product assurance and a more efficient service experience.
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A 1,700-Kilometer Journey of Trust: From Osaka, Japan To Changshu, China
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How to transform the mechanical seal of the slurry pump?
We have successfully completed this renovation by removing the original packing and dynamic seal and replacing them with a brand new cartridge double mechanical seal designed by FBU. Currently, it has been successfully used on the customer's site for three years, helping them save costs, water, and protect the environment,Everyone at FBU is very happy and thinks it's very meaningful.
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Keep In Touch With Us
If you have any questions or requirements regarding mechanical seal solutions, please feel free to contact our customer service team. Our professional team will provide you with detailed product information, answer your questions, and tailor the best solution to meet your needs.
Mob：+86-512-57011188
E-mail：service@mail.com