Pump & Fluid Handling

Magnetic Couplings for Sealed Pump Systems

At SM Magnetics, we design magnetic coupling solutions for pump and fluid handling systems where leak prevention, corrosion resistance, and operational reliability are critical.

Magnetic drive systems eliminate dynamic shaft seals, reducing the risk of fluid leakage in applications involving corrosive, hazardous, sterile, or abrasive media.

Our engineering team supports pump manufacturers and system designers across demanding fluid environments by optimizing:

• Torque transmission efficiency
• Magnetic circuit performance
• Coating/encapsulation strategy
• Assembly tolerances and air gaps

Why Magnetic Couplings in Fluid Handling Systems?

In conventional pump systems, mechanical seals are common failure points. Over time, wear, chemical exposure, and thermal cycling can lead to leakage and maintenance downtime.

Magnetic couplings remove the physical shaft penetration between the motor and the pump chamber, enabling:

• Hermetic sealing
• Reduced maintenance requirements
• Lower contamination risk
• Improved operational safety

This makes magnetic drive pumps ideal for handling:

• Corrosive chemicals
• Slurries and abrasive fluids
• Hazardous liquids
• Sterile or sensitive fluids

Environmental & Coating Consideration

In sealed pump assemblies, magnets are often exposed to:

• Humidity and condensation
• Aggressive chemical environments
• Saltwater or marine exposure
• Thermal cycling

Coating breakdown in these environments can compromise containment integrity and reduce system lifespan.

Selecting the appropriate coating, whether epoxy, parylene, PTFE, or specialized encapsulation, must be evaluated alongside magnetic performance and mechanical design.

Coating thickness, chemical compatibility, and long-term corrosion resistance all influence reliability.

For more information check out our coating specifications. 

Operational Pump Applications

Magnetic drive pump systems are commonly used in:

• Chemical Processing - Transfer of corrosive chemicals between storage and processing systems.
• Oil & Gas - Transport of crude oil, refined products, and natural gas liquids.
• Water & Wastewater Treatment - Movement of water and treatment chemicals during purification and distribution.
• Mining & Mineral Processing - Handling abrasive slurries in extraction and processing operations.

In each of these environments, magnetic coupling systems must balance corrosion resistance, torque transmission, and structural integrity.

From Prototyping to Production

For early-stage validation, standard magnet materials and coating options are available through our eCommerce division, SuperMagnetMan, for rapid testing and evaluation.

For production programs requiring optimized coupling design, environmental validation, or custom coating strategies, our engineering team collaborates directly with customers to support long-term performance.

Early design collaboration can prevent costly redesign and field failures. Our engineering team is available to review application requirements and environmental constraints.