The Reliable Manufacturer of Mechanical Seals

Built for Extreme Performance

● 25 Years Focus on Mechanical Seals
● Self-Owned Factory with 21500 ft² Warehouse
● Large Stock Eliminate Your Supply Chain Risk
● Flexible OEM and Experienced R&D
● ISO9001 Certified and Prompt Service

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PRECISION-ENGINEERED SEALS

Design And Manufacture Since 2001
Industry-Wide Applications
Custom-Built To Specifications
High-Quality Guaranteed

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PROFESSIONAL OEM

COMPONENT MANUFACTURES

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With customized OEM services

Tailored to your sealing challenges, we provide customized O.E.M. mechanical seals and are committed to creating technically optimized, reliable, and durable sealing solutions for you.

With 25 years of industry experience,

Ningbo Guowei Mechanical Seals Technology Co., Ltd strives continuously to be the highest quality manufacturer.
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Efficient inventory management

We hold a large inventory, which greatly shortens product lead time and reduces customer supply chain risks.

Professional R&D team

Highly skilled team is constantly working on optimizing product performance and expanding product coverage. In addition to various standard seal products, we offer customer a range of cartridge seals and OEMs.

Strict quality control

Only high-quality material will be selected. Each product will be hand-inspected and machine-tested to ensure superior functionality and durability before it reaches the customer.

Personalized Service and Support

We provide professional technical advice based on customer consultation. Effective technical assistance and repair service can greatly enhance customers’ experience.

ISO 9001
Certified

Certificate of
Compliance

FDA Product
Avaliavble

World Wide
Deliverye

Specialised in
Customization

ISO 9001
Certified

Certificate of
Compliance

FDA Product
Avaliavble

World Wide
Deliverye

Specialised in
Customization

ISO 9001
Certified

Certificate of
Compliance

FDA Product
Avaliavble

World Wide
Deliverye

Specialised in
Customization

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Product Spotlight

16mm Grundfos Centrifugal Pump Elastomeric Bellow Mechanical Seal

Model: GW GLF-16 Shaft Size: 16mm Features: • Elastomeric bellows design for enhanced flexibility and compensation • Includes integrated spacer and clamp ring for secure mounting • Suitable for Grundfos centrifugal pumps with 16mm shafts • No spring mechanism, reducing risk of clogging and corrosion • Easy to install and maintain in confined spaces

GW GU O-Ring Pusher Cartridge Seal 4610

Model: GW GUSize: metric & imperial size available Features: Single cartridge, with O-ring pusher design Compact and versatile construction For general industrial duty Positive drive mechanism via elastomeric O-rings Pre-set and pre-assembled for simplified installation Suitable for standard ANSI/DIN equipment Available in both metric and imperial shaft sizes

GW GU1 Cartridge Mechanical Seal CURC

Model: GW GU1Size: Metric & Imperial size availableFeatures: Unitizedsingle cartridge design Modular construction Self-aligning sealing faces Fully assembled, preset, and factory tested Compatible with metric & imperial shaft sizes For conventional barrier/containment fluids

GW GU2 Cartridge Mechanical Seal AES Convertor II

Available Size: 24 -100 mm/ 1.0”- 4.0” inchFeatures:- Hydraulically balanced rotating face- Streamlined, modern cartridge design- Fully unitized robust construction- General-purpose sealing solution- For metric and imperial shaft sizes

GWL9 Cartridge Seal for Food and Beverage Industry Replace AES CS

Model: GW L9 Sizes: 0.625" - 4.000" (20mm - 100mm) Features: - Hydraulically balanced seal face design - Non‑metallic wetted parts for corrosion resistance - Pre‑set working length for simplified installation - Fully assembled and tested cartridge unit - Suitable for both metric and inch shaft sizes - Compact and robust construction

GW PCM Industrial Pumps Cartridge Mechanical Seal

Model: GW PCM Size: 35/60/80 Features: - Purpose-built cartridge seal for PCM industrial pumps - Hydraulically balanced face design - Pre-assembled and factory tested - Compact, easy-to-install construction - Reliable performance in demanding PCM pump applications - Cost-effective sealing solution

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applicationPrecision Sealing Solutions for Every Industry

We don’t just manufacture mechanical seals—we engineer reliability across the toughest industrial environments.

Our high-performance seals are designed to meet the demanding requirements of diverse sectors, ensuring durability, leak-free operation, and extended service life even under extreme conditions. From managing corrosive fluids in chemical processing to withstanding high-pressure environments in oil and gas, our products provide critical solutions that enhance efficiency and reduce downtime across applications.

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