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WELCOME TO FBU
THE PIONEERING SPECIALIST IN CARTRIDGE MECHANICAL SEALS FROM CHINA

FBU is a leading mechanical seal manufacturer and custom seal solutions supplier in China, renowned for innovation, quality, and global service excellence.

18+
Years of Experience
50+
Countries Served
100+
Patented Technologies

Introducing the Quality & Speed Service (QSS) Plan

To further strengthen your brand and market position, we have comprehensively upgraded our service policy. The QSS plan offers a 3-year extended warranty and guaranteed 7-day shipping — ensuring reliable product assurance and efficient service experience.

3-YEAR

Extended Warranty

Backed by rigorous testing and quality assurance.

7-DAY

Guaranteed Shipping

Fast global delivery with real-time tracking.

24/7

Technical Support

Expert engineers ready to assist you anytime.

How We Deliver Excellence

1

Engineer the Seals

With your specifications and participation, we design and develop the most suitable sealing solution. We follow up on seal performance after delivery to ensure optimal operation.

Learn More →
2

Produce the Seals

Our production process strictly follows the API Q1 standard requirements, ensuring every seal meets the highest quality benchmarks from raw material to final inspection.

Learn More →
3

Control the Quality

Our quality policy: Craft with Precision, Prioritize Quality, Innovate Continuously, Exceed Expectations. Every product undergoes rigorous testing before shipment.

Learn More →
GP Seal Water Control System
New Product Spotlight

GP Seal Water Control and Monitoring System

The GP system provides a complete monitoring and control solution for seals and water systems. Designed for harsh environments with high temperature, high pressure, and chemically aggressive elements.

  • ✅ Ideal for pulp, paper, and chemical industries
  • ✅ Suitable for mining and general industrial applications
  • ✅ Real-time performance monitoring
  • ✅ Automated control for optimal seal life

Our Product Range

API 682 4th Edition Seals

API 682 4th Edition Seals

APOG series cartridge mechanical seals tailored for oil and gas industry.

3-Year Warranty
Standard Cartridge Seals

Standard Cartridge Seals

Suitable for a wide range of equipment; available to deliver within 7 days.

Fast Delivery
Engineered Seals

Engineered Seals

Custom-designed for complex applications with extreme conditions.

Custom Solutions
Seal for Mixers & Agitators

Seal for Mixers & Agitators

Robust sealing for high-vibration and off-center rotating equipment.

High Durability
Seal for Pulp & Paper

Seal for Pulp & Paper

Designed for abrasive fibers, high temperatures, and corrosive environments.

Corrosion Resistant
Component Seals

Component Seals

Modular design for easy installation and maintenance in existing systems.

Easy Installation
Seal Support Systems

Seal Support Systems

Ensure optimal environment for seal operation and extended lifetime.

Complete Systems
Bearing Isolators

Bearing Isolators

Labyrinth and magnetic types to extend MTBR of pumps, motors, and gearboxes.

MTBR Extension
Barrier Fluid Reservoirs

Barrier Fluid Reservoirs

Maintain pressure and fluid levels in dual seal arrangements.

API 682 Compliant
Cyclone Separator

Cyclone Separator

Removes solids from seal flush lines to protect mechanical seals.

Solid Separation
Forced Circulation System

Forced Circulation System

Ensures continuous cooling and lubrication for high-heat applications.

Thermal Management
Heat Exchanger

Heat Exchanger

Maintains optimal seal temperature in high-temperature processes.

Cooling Efficiency

About FBU

Who We Are

FBU is a leading mechanical seal manufacturer and custom seal solutions supplier in China. Renowned for our expertise in mechanical seal development and supply, we hold a leading position in the industry. As a trusted provider of mechanical seal solutions, we pride ourselves on the global dissemination of innovative sealing technologies.

Our factory is conveniently located just 120 km from Shanghai Pudong International Airport and 80 km from Shanghai Hongqiao International Airport. If you take the high-speed train from Shanghai, the journey to our facility takes only 25 minutes — allowing you to reach a professional mechanical seal factory swiftly upon your arrival in China.

15+
Years in Customization
50+
Countries Served
100+
Patents
FBU Factory

Successful Cases

With over 15 years of experience, FBU has successfully customized cartridge mechanical seals for clients across diverse industries including oil & gas, chemical processing, pulp & paper, mining, and power generation. Our solutions have improved reliability, reduced downtime, and extended equipment life worldwide.

Oil Refinery in Saudi Arabia

API 682 seals implemented across 200+ pumps; MTBF increased by 300%.

Pulp Mill in Canada

Custom seals for high-abrasion applications reduced maintenance by 60%.

Chemical Plant in Germany

Dual seal systems with barrier fluid control eliminated fugitive emissions.

Our Quality Policy

"Craft with Precision, Prioritize Quality, Innovate Continuously, Exceed Expectations."

Every FBU product is developed and manufactured under strict adherence to API Q1 standards. From design and material selection to final testing, our quality management system ensures reliability, safety, and performance in the most demanding environments.

Design & Engineering

  • • FEA and CFD analysis
  • • Material compatibility testing
  • • API 682 4th Edition compliance

Testing & Validation

  • • 100% pressure and leak testing
  • • Dynamic performance simulation
  • • Third-party certification available

Frequently Asked Questions

What is the warranty period for FBU seals?

Most FBU seals come with a 3-year extended warranty under our QSS service plan.

How fast can you ship?

We guarantee 7-day shipping for standard products. Custom solutions ship within 15–30 days.

Do you offer custom seal design?

Yes, we specialize in engineered and custom mechanical seals for unique applications.

Are your products API 682 compliant?

Yes, our APOG series and other seals are fully compliant with API 682 4th Edition.

Can I visit your factory?

Yes, our factory is 25 minutes from Shanghai by high-speed rail. We welcome client visits.

Contact Us

For inquiries, technical support, or to request a quote, please visit our official website.

Visit Official Website
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