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Elastomer Bellow Mechanical Seals

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Elastomer Bellow Mechanical Seals Specification

Application
Water Pumps, Waste Water, Chemical Process Pumps, General Industrial Use

Theory
Mechanical seal by elastomeric bellow

Hardness
60-80 Shore A (Elastomer Bellow)

Usage
Industrial

Style
Single Coil Spring, Unbalanced

Material
PTFE

Temperature
20-120 Celsius (oC)

Pressure
Up to 10 bar

Product Type
Elastomer Bellow Mechanical Seals

Speed
Up to 20 m/s

Function
Sealing rotating shafts to prevent leakage

Color
Sliver

Size
18 mm to 100 mm (shaft size)

Structure
Single acting, Elastomer bellow with rotary and stationary faces

Features
Corrosion Resistant, Easy Installation, Suitable for Slurry Media

Seal Type
Rotary and Stationary Type

Replacement Option
John Crane Type 21, Burgmann MG1 Equivalent

Elastomer Options
Nitrile, EPDM, Viton, Neoprene

Mounting Style
Externally Mounted

Face Combination
Carbon vs. Ceramic/Silicon Carbide/Tungsten Carbide

Spring Type
Single Coil Spring

Leakage Control
Single Seal Design for Moderate Leakage Protection

Direction of Rotation
Independent, Bi-directional

Industries Served
Chemical, Petrochemical, Beverage, Water Treatment, Mining

About Elastomer Bellow Mechanical Seals

Elastomer Bellow Mechanical Seals

Operational Conditions:

Temperature: -20 C to +120 C
Pressure: =1.4MPa
Speed: =15m/s

Materials:

Stationary Ring: Ceramic (Alumina), Silicon Carbide Reaction Bonded, Silicon Carbide
Sintered Pressureless, Ni-binder Tungsten Carbide, Co-binder Tungsten Carbide
Rotary Ring: Resin Impregnated Carbon Graphite (Furan), Antimony Impreg, Carbon
Graphite, Silicon Carbide Sintered Pressureless, Silicon Carbide Reaction Bonded,
Co-binder Tungsten Carbide, Ni-binder Tungsten Carbide
Secondary Seal: Nitrile (NBR), Ethylene Propylene (EPDM), Fluorocarbon Rubber (Viton)

Applications:

Clean Water, Sewage Water, Oil and other moderately corrosive fluids

Product details

Temperature	-20 Degree C to + 120 Degree C
Brand	Makseals
Model Name/Number	MAK101
Pressure	1.4MPa
Speed	15m/s

Versatile Design for Industrial Applications

Elastomer Bellow Mechanical Seals are engineered for adaptability across diverse industries including chemical processing, mining, beverage, water treatment, and general industrial operations. Their bi-directional, independent rotation design, and externally mounted style make them suitable for various pump types handling demanding fluids and slurry media.

Robust Material and Face Combinations

Available with face combinations such as Carbon versus Ceramic, Silicon Carbide, or Tungsten Carbide, and elastomer options like Nitrile, EPDM, Viton, or Neoprene, these seals deliver enhanced corrosion resistance and resilience under harsh operating conditions. PTFE components offer additional protection for chemically aggressive environments.

Simple Installation and Maintenance

Designed for convenience, these mechanical seals require minimal maintenance and can be installed externally, reducing downtime and service complexity. The single coil spring structure and moderate leakage protection design allow for straightforward integration and reliable operation in both original equipment and retrofit scenarios.

FAQ's of Elastomer Bellow Mechanical Seals:

Q: How do elastomer bellow mechanical seals prevent leakage in pumps?

A: These seals use a flexible elastomer bellow to maintain a tight seal between rotating and stationary faces, typically made from materials like carbon and ceramic or silicon carbide. The bellow acts as a dynamic barrier, effectively preventing process fluid from leaking along the shaft under pressures up to 10 bar and speeds up to 20 m/s.

Q: What benefits do elastomer bellow seals offer compared to other mechanical seals?

A: Elastomer bellow seals are exceptionally corrosion resistant, easy to install, and versatile in application. They can handle a broad temperature range (20C to 120C), withstand aggressive chemicals and slurry media, and provide reliable leakage control, making them an excellent choice for industries requiring safe, durable, and low-maintenance sealing solutions.

Q: Where are elastomer bellow mechanical seals typically used?

A: These seals are commonly applied in water pumps, waste water treatment plants, chemical process pumps, mining operations, and various industrial fluid handling systems. Their compatibility with different face and elastomer materials allows broad utility across chemical, petrochemical, beverage, and water treatment industries.

Q: What elastomer options are available, and how do I choose the right one?

A: You can select from Nitrile, EPDM, Viton, or Neoprene elastomers based on the chemical compatibility and operating conditions. For aggressive chemicals, Viton or EPDM is suitable, while Nitrile and Neoprene are ideal for general water and light chemical applications. Consult with your supplier for precise recommendations relating to your process fluid.

Q: When should I replace an elastomer bellow mechanical seal?

A: Replacement is recommended if you notice any leakage, excessive wear, or material degradation around the sealing faces or bellow. Routine inspection and maintenance per manufacturer guidelines will help prolong the seal's life, but timely replacement ensures continued operational safety and efficiency.

Q: How does the installation process work for externally mounted seals?

A: Externally mounted elastomer bellow seals are designed for simple and fast installation. The single coil spring and flexible bellow allow the seal to be fitted onto the shaft without the need to dismantle major pump components, which reduces downtime and maintenance labor.

Q: What are suitable face combinations for my application?

A: Face combinations, such as Carbon versus Ceramic, Silicon Carbide, or Tungsten Carbide, are selected based on chemical compatibility, abrasiveness of the media, and temperature. Ceramic is ideal for general service, Silicon Carbide and Tungsten Carbide for more abrasive or corrosive media. Consult a sealing expert for the best choice in your application.

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