Your Professional Elastomer Bellow Mechanical Seals Manufacturers

 

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.

 
  • John Crane 2100 2100K 2100N Mechanical Seal

    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

    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

    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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  • John Crane 1 Mechanical Seal

    John Crane 1 Mechanical Seal

    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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  • John Crane 1B Mechanical Seal

    John Crane 1B Mechanical Seal

    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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  • John Crane 2 Mechanical Seal

    John Crane 2 Mechanical Seal

    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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  • John Crane 2B Mechanical Seal

    John Crane 2B Mechanical Seal

    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

    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
01.

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.

02.

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.

03.

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.

04.

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.

 

Application of Elastomer Bellow Mechanical Seals
 

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.

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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

 

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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
- Axial movement ≤0.5 mm
- Clean sealing chamber

210

Key Design Features

- Rubber bellows for vibration resistance
- Conforms to DIN24960 standard

 

 

Lead Time

 

Quantity (sets)

1 - 10

11 - 100

101 - 1000

> 1000

Lead time (days)

7

15

30

To be negotiated

 

Product Packaging

 

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FAQ:

Q: Do you provide free samples ?

A: Usually we do not provide free samples .There is a sample cost which can be refund after you place order .

Q: What's your payment terms ?

A: We accept T/T, Paypal, Western Union when qualified goods are ready for ship. Also pay to via Credit Card is welcomed.

Q: How can we guarantee quality?

A: Always a pre-production sample before mass production;
Always final Inspection before shipment.

Q: What is a bellow mechanical seal?

A: Bellows Mechanical Seal are a type of mechanical seal where the spring element is a bellows. This eliminates the need for a secondary dynamic seal e.g o-rings.

Q: What material is used for bellow seals?

A: Materials used for bellows construction vary based on factors like temperature, pressure, and media compatibility. Stainless steel, Inconel, Hastelloy, and other alloys are commonly employed.

Q: How do you store mechanical seals?

A: To ensure this shelf life, especially for 'O'-rings, environmental conditions must be: Room temperature between 5°C (40°F) and 25°C (80°F) with humidity below 70% Free of radiation, particularly sunlight.

Q: What is the difference between mechanical seal and shaft seal?

A: Oil or Rotary shaft seals are vulnerable to extreme temperatures, which can cause them to wear out faster if they are used in very high or low temperatures. A mechanical seal features stationary elements, rotating components and a spring.

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

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