Ningbo Fuxin Sealing CO., LTD. is an enterprise specializing in the research and development, design, development, manufacture and sale of mechanical seals. The company has a group of high-quality technical and managerial personnel, can customize the corresponding solutions for customers, With the care and support of our customers, our company has been growing and expanding. We have introduced advanced machinery and equipment, advanced production technology, and constantly improved the management team and testing methods. Wholeheartedly provide quality products and excellent services to customers, and create a mutually beneficial, win-win and harmonious economic development prospects.
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John Crane 2100 2100K 2100N Mechanical Seal
The FXMG mechanical seal is designed with a large spring transmission structure. It can effectively solve the problem of inconvenient screwing in tight space and is easy to install.
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Mechanical Seals For Gorman-Rupp Pumps
The FXTP2 mechanical seal features a large spring drive design, making it a great solution for tight spaces where screwing is difficult, and is easy and convenient to install.
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Burgmann MG1 MG12 MG13 MGS20 Mechanical Seal
The FXMG mechanical seal is designed with a large spring transmission structure. It can effectively solve the problem of inconvenient screw tightening in a tight space and is easy to install.
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FXT1 mechanical seal is a non-balanced compact large spring structure design. It can solve the problem of small transmission and compensation force. It is a perfect replacement for John Crane TYPE1
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FXT1B mechanical seal is a balanced compact large spring structure design. It can solve the problem of small transmission and compensation force. It is a perfect replacement for John Crane TYPE1B
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FXT2 mechanical seal is a non-balanced compact large spring structure design. It can solve the problem of small transmission and compensation force. It is a perfect replacement for John Crane TYPE2
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FXT2B mechanical seal is a balanced compact large spring structure design. It can solve the problem of small transmission and compensation force. It is a perfect replacement for John Crane 2B
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John Crane 502 Mechanical Seal
The FX502 mechanical seal is a balanced, compact, large spring design. It can solve the problem of low transmission and compensation force. It is a perfect replacement for the John Crane 502
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Why Choose Us
Products Application
Products are widely used in petroleum, chemical industry, power, machinery, metallurgy, ships, sewage treatment, printing and dyeing, food, pharmaceutical and other fields.
Our Service
Provide comprehensive pre-sales, in sales, and after-sales services, including technical support, Track usage and give positive feedback. Quick response within 24 hours.
Production Equipment
Our equipment includes Sawing machine,Grinding machine,CNC lathe,Machining center,Bench drill,Grinding and polishing machine,Spring force measuring machine,Optical strip testing equipment.
Our Certificates
Under the strict management of IS09001 quality system, product conforms to DIN24960/EN12756, ISO3069, API 610, API 682 and GB6556 standards.
Key Features of Elastomer Bellow Mechanical Seals
Flexibility and Adaptability
Elastomer bellows allow for excellent flexibility, which helps in compensating for minor shaft misalignments. This adaptability ensures effective sealing even in dynamic conditions where other seals may struggle.
Self-Aligning Capability
Due to the elastomer’s structure, Elastomer bellow seals can adjust naturally, reducing the chances of installation errors. This self-aligning nature enhances the seal’s performance and lifespan, especially in high-vibration environments.
Corrosion and Chemical Resistance
The material used in elastomer bellow seals is often selected based on its ability to resist corrosive chemicals, making these seals suitable for handling fluids in chemical and water treatment plants.
Shock Absorption
The elastomeric bellow design provides inherent shock absorption, which helps the seal withstand fluctuating pressures and loads, especially useful in industries where pumps frequently start and stop.
Chemical processing: Seals made from chemically resistant elastomers, such as FKM or FFKM, are used in pumps, mixers, and other equipment handling aggressive chemicals, solvents, or acids.
Petrochemical and refining: Elastomer bellows seals are used in pumps, compressors, and other rotating equipment in the petrochemical and refining industries, where they must withstand high temperatures, pressures, and exposure to hydrocarbons.
Pharmaceutical and food processing: Seals made from FDA-compliant elastomers, such as EPDM or PTFE-encapsulated FKM, are used in equipment handling food, beverages, and pharmaceutical products, ensuring process purity and safety.

Water and wastewater treatment:
Elastomer bellows seals are used in pumps, mixers, and other equipment in water and wastewater treatment plants, where they must resist exposure to chlorine, biocides, and other treatment chemicals.
Power generation:
In power plants, elastomer bellows seals are used in pumps, turbines, and other rotating equipment, where they must withstand high temperatures, pressures, and exposure to steam or cooling water.
Pulp and paper:
Elastomer bellows seals are used in pumps, refiners, and other equipment in the pulp and paper industry, where they must resist exposure to corrosive chemicals, abrasive slurries, and high temperatures.
Mining and mineral processing:
In mining and mineral processing applications, elastomer bellows seals are used in pumps, mixers, and other equipment handling abrasive slurries, corrosive reagents, and high-pressure fluids.
Detailed Photos


Product Description
|
Parameter Category |
Specifications |
Reference |
|
Model |
MG1 Series (Standard Single-End Non-Balanced Design, Bellows Structure) |
113 |
|
Shaft Diameter Range |
5-70 mm (Customizable for non-standard sizes) |
113 |
|
Operating Temperature |
-20°C to 200°C (Depends on auxiliary seal material: NBR, FKM, EPDM) |
213 |
|
Pressure Resistance |
≤1.2 MPa (Standard) / ≤5 MPa (Balanced Design with Dual Seals) |
113 |
|
Seal Face Materials |
Silicon Carbide (SiC) / Tungsten Carbide (WC) / Alumina Ceramic (AlO) |
27 |
|
Auxiliary Seal Materials |
Nitrile Rubber (NBR) / Fluorocarbon Rubber (FKM) / Ethylene Propylene (EPDM) |
210 |
|
Compatible Media |
Water, Oil, Weakly Corrosive Liquids (Requires flushing system for abrasive media) |
113 |
|
Applications |
Centrifugal Pumps, Sewage Pumps, Agitators, Submersible Equipment |
17 |
|
Installation Requirements |
- Shaft radial runout ≤0.04 mm |
210 |
|
Key Design Features |
- Rubber bellows for vibration resistance |
Lead Time
|
Quantity (sets) |
1 - 10 |
11 - 100 |
101 - 1000 |
> 1000 |
|
Lead time (days) |
7 |
15 |
30 |
To be negotiated |
Product Packaging






FAQ:
As one of the leading elastomer bellow mechanical seals manufacturers and suppliers in China, we warmly welcome you to wholesale elastomer bellow mechanical seals made in China here from our factory. All customized are with high quality and competitive price.
John Crane 1 Mechanical Seal







