Think Sealless – WHO

Sealless is Suitable for You

Engineers need, and indeed Industrial regulations often require, rock solid, dependable and reliable performance from pumping equipment. Magnetic drive sealless pumps are suitable for handling a whole variety of liquids from benign to very hazardous.

Whatever the process, sealless pumps could be for you. They prevent leaks and emissions, ensuring safety, and provide reliability and high performance.


Sealless pumps designed and built to the unique requirements of your industry

  • Chemicals – pumping numerous liquid types including those that are extremely hazardous, toxic, corrosive, carcinogenic, aggressive and within Industries such as; chlor-alkali and agrochemical
  • Industrial – water transfer, hot oils, pharmaceuticals, petroleum, wastewater and oil
  • Oil & Gas – onshore facilities and offshore platforms demand high levels of reliability including operations on the high seas and for transfer duties
  • Water & Waste – circulation and irrigation, making plants reliable, safe, cost-effective and environmentally compliant
  • Power generation – including the movement of fuel oil and for auxiliary purposes including cooling and lubrication as well as in R&D applications
  • Utilities – industries require pumps for the provision of additional services, such as heat,  extremely hot water, cold water and cleaning media, such as caustic soda for CIP systems, so processes can be performed efficiently, quickly and safely


Pumps designed to suit your application for optimal performance

Whatever your application, you require robust and reliable pumps appropriate to your specifications. You need the optimal pump for your application for complete safety and reliability. You need pumps with minimal downtime due to simplicity in design and a requirement for minimal maintenance and maximum uptime.  You need Sealless pumps from HMD Kontro.

For more information about sealless magnetic drive pumps for your application, contact us. Think Sealless – we are confident that we have the right solution for you.

Think Sealless – WHAT is a Sealless Pump?

Essentially, sealless pumps are centrifugal pumps without packed glands or seals. Instead of a seal, there is a static containment shell or shroud, which forms a completely sealed liquid end or pressure boundary.

Prime mover energy is transmitted to the sealed liquid end by a bank of external magnets, which pass force through the containment shell to the inner magnets attached to the impeller shaft, meaning there is no risk of leaks or emissions.

Sealless v Sealed Pumps

It’s necessary to understand what a mechanical seal is to differentiate between the two types of pump. Mechanical seals are designed to maintain their sealing capability by leaking small amounts of fluid in order to keep the seal faces lubricated.

Mechanical seals are widely regarded as the weakest point in any pumping system. In fact, they account for 80% of all pump failures, with the remainder being leakage through static seals such as gaskets or O Rings and bearing failure.

Seals, like bearings, will ultimately wear and, as they wear, the seal faces lose their effectiveness and liquid loss through the seal increases. These fugitive emissions can be costly, resulting in lost time and money, as well as reduced worksite and environmental safety.

WHAT makes a HMD Kontro Sealless Pump different?

  • Welded metal containment shell to ASME VIII pressure vessel standards
  • Optional ZeroLoss® shell. To improve efficiency and reduce life cycle costs
  • Dynamically balanced rotating parts for smooth operation and longevity
  • Modular cartridge construction reducing maintenance time
  • Many common components reducing spare part inventory
  • Fully encapsulated outer magnet ring for protection and easy cleaning

How HMD Kontro can help you with your pump requirements

HMD Kontro has a comprehensive range of magnetic drive sealless pumps designed to perform in most climate extremes and in many applications to help you revolutionise your process workflow.  To find out more please click here.

It Can Take The Heat! The CS Sealless Pump For Heat Transfer in Hot Oil Systems

A Unique Sealless Pump for Heat Transfer in Hot Oil Systems

Isolating the pump from the heat source has usually been essential in a hot oil system.  However, thanks to its unique torque ring, our CS pump requires no cooling fluids or heat exchangers during operation.

The CS Sealless Pump is the perfect choice

The pump is totally self-venting and the magnetic coupling is immersed in the hot oil. Not only that, the torque ring design offers a built-in soft start for viscous liquids, and the energy created adds to the efficiency of the system.

Simple to operate and maintain, cost-effective to run and capable of operating up to 350°C / 660°F without cooling as standard (a 450°C/842°F option is available on request), this all makes the HMD Kontro CS sealless pump the ideal choice.

Benefits of the CS Pump

  • Ideal for heat transfer liquids
  • Sealless design provides total product containment
  • No product cooling required for temperatures up to 350°C / 660°F as standard
  • One fully confined Casing Gasket to eliminate ‘blowout’ risk
  • Built-in soft start feature, which is ideal for viscous start up

In addition, the torque ring drive positively contributes to the efficiency of the hot oil system and the CS can also be used in toxic, aggressive, hot, crystallising and high value processes.

Now with Longer MTBF for Increased Operational Efficiency

The recent upgrade of the outer magnet ring (OMR) on the CS range now offers significant additional advances in magnetic coupling robustness, leading to increased MTBF (mean time between failure), reduced downtime / increased uptime and increased operational efficiency.

The OMR upgrade maintains similar performance and maintains reliability

The retro-fittable OMR provides shielded magnets that retain the same level of performance and eliminate any potential for damage.  The new OMR has improved cyclic thermal duty whilst the identical coupling power produced means that the upgrade maintains similar performance to maintain reliability.

The encapsulated magnets on the OMR are made of samarium cobalt and have increased resistance in corrosive applications.  They also provide higher efficiency by reducing slip and improved reliability because no tie bolts are used in the retention of the magnets.

To see more about the case for the sealless CS, click here:



Get The Know How – Guide To Sealless Magnetic Drive Pumps

Download a copy of our recently updated guide to the Know How surrounding sealless pumps. They have always had significant benefits, especially thanks to the absolute absence of leaks or emissions. However, these are now coming further to the fore due to recent and more stringent environmental, health and safety requirements. For the Guide to Sealless Magnetic Drive Pumps click here.

Environment, Health and Safety (EHS)

In these days of increasing EHS concerns, and the resulting legislation and litigation, leakages of process product can cause significant problems. Damage can be caused not only to personnel and property onsite, but also to reputations, plus also the loss of production uptime and valuable productivity.

Choose the safe option – a sealless magnetic drive pump

Unlike pumps that include a mechanical seal, which is designed to leak a little for lubrication, but which could also fail, a sealless pump is the safe option. With a sealless pump, the product is completely contained at all times with no potential for leaks, no escapes to the atmosphere, no emissions, no health issues, no safety concerns and no environmental hazards. No How!

A virtual lack of maintenance and repair meaning less downtime

A further advantage of the sealless pump is the almost complete lack of maintenance and repair required. Not only does this reduce the work and requirement for routine and replacement parts, it also eliminates the associated downtime.

Sealless pumps are now an option on new applications

You may be surprised. The capabilities and operating parameters for sealless pumps may well now be much higher than you think. As a result, they are finding many new applications and are often being used on installations where traditional mechanical sealed pumps would be first considered.

Download Your Guide To Sealless Magnetic Drive Pumps

As the instigators of the sealless pump concept, HMD Kontro have an unparalleled understanding of the magnetic drive process and its benefits. As a result, we have recently updated our Know-How Guide that explains these savings in further detail.

Download a copy today by clicking here.

WHY You Should Think Sealless And Choose A Sealless Pump?

It’s simple to see WHY you should choose a sealless pump over a sealed version. Among the reasons are the 5 S’s, relating to Savings, Safety, Skills, Standards and Solutions.

Sealless Savings: Cost savings can be made at every stage of your project from design, engineering, procurement, installation, documentation and commissioning. It’s easy to see how quicker completion times mean earlier plant utilisation. And those savings continue once your sealless pumps are up and running. With magnetic drive pumps, you will also benefit from less maintenance, longer mean time between failures (MTBF) and a more rapid return to operation, which all contributes to enhanced profitability and margins.

Sealless Safety: Health and safety is at the top of everyone’s list and it includes keeping all personnel safe who are involved in operations. Also it is essential to minimise the impact of manufacturing and other operations on both the local and wider environment from a legal and moral standpoint. Sealless pumps are completely self-contained with the containment shell providing a complete mechanical barrier, preventing leaks, escapes and emissions.

Sealless Skills: People are an expensive commodity and need to be employed to best effect. Sealless pumps save on staff costs and time due to the simplicity of the design, the ease of commissioning and the minimal maintenance requirement. This all means fewer people are needed and significantly less specialist skills are required leading to reduced training and employment costs.

Sealless Standards: All pumps have to conform to the relevant international standards including API, ASME, ANSI, and/or ISO. By installing sealless pumps from HMD Kontro, you know that compliance is guaranteed. The manufacturing and design of our pumps is also fully in accordance with ISO 9001. We ensure the stringent quality management and health & safety standards are met in order that your sealless pumps deliver consistent performance and to this end, we are continually identifying and implementing improvements.

Sealless Solutions: Sealless magnetic drive pumps are the solution to provide you with complete peace of mind. Pumps without seals do not need seal support systems, meaning there is no risk of seal failure and leaks and emissions are eliminated. Sealless pumps are kinder to the environment and safer for operators. Maintenance is considerably reduced with the mean time between failure (MTBF) for magnetic drive sealless pumps typically three times longer than for mechanically sealed pumps.

Ground breaking innovation and technical advances since 1947

Since we developed the first sealless magnetic drive pump in 1947, ground-breaking at that time in pump and fluid handling technology, we have continued to be at the forefront of innovation and technological development. Our pumps can be seen throughout the world in many industries including chemical, power, oil & gas, water & waste, pharmaceutical and general industry.

Contact HMD Kontro to choose a sealless pump

If you are looking for pumps without problems, sealless magnetic drive pumps really are the Solution. So Why Not choose a pump that doesn’t leak? Please click here to learn more or contact us for more information.

GSPVS – Reaching Parts Other Magnetic Drive Pumps Cannot!

GSPVS Pump and Cutaway diagram


Designed for use on tank farms for fuel transfer, as well as in tank applications at oil and gas refineries, chemical and petrochemical processing plants etc, the GSPVS pump meets the requirements of API 685 (as applicable to this style of pump) and is fully ATEX compliant.

The GSPVS pump comes in a compact package with all the benefits of a magnetic drive pump

The vertically mounted GSPVS pump provides all of the benefits of a magnetic drive pump in a compact package, using fewer parts with no seal systems for reduced cost operation. Composed of modules which can be joined to reach a total assembly length up to five metres, the GSPVS is mounted on a base available to ANSI B16.5 or to customer specific requirements, including lifting points as standard. The modular construction uses a flexible jaw coupling to join drive shafts and to absorb misalignment, decreasing vibration and increasing life expectancy.

Maximised seal and lubrication life

Greased for life ball bearings are used along the column, removing the need for lubricating or cooling the intermediate sleeve bearings using system fluid. The use of labyrinth bearing seals and a suction strainer avoids external contamination to maximise seal and lubrication life.

Looking after the safety of personnel

The GSPVS utilises over thirty years’ experience in API applications and over a seventy year heritage in magnetic drive technology at HMD Kontro. With stricter demands for the safety and welfare of both personnel and the environment being imposed, sealless pumps are playing an increasingly important role.

For more information, click here.

Think Sealless – HOW You Can Save Money by Using Magnetic Drive Sealless Pumps

It’s not difficult to see how you can save money by using magnetic drive sealless pumps. You can expect savings from concept to completion of your project and beyond in the areas of capital outlay, installation, documentation, project management and, importantly, operating costs.

They require minimal maintenance and monitoring and, because of their modular construction, servicing onsite is easy and straightforward. You won’t need any special tools for maintenance, and the stock of spare parts and inventory is reduced due to common components, resulting in lower operational costs.

Lower service and maintenance costs

It’s easy for pump service and maintenance costs to mount up, but magnetic drive pumps from HMD Kontro have a simple design and no complex seals or sealing systems to support, meaning maintenance is kept to a minimum. In addition, the pumps can be repaired onsite and the cartridge can be replaced in just 20 minutes using basic tools.

Benefits in terms of savings

  • Greater automation and less demand on staff time
  • Suitable for a wide range of applications
  • No repair or replacement of seals and bearings
  • One self-contained cartridge assembly for easy servicing
  • MTBF is typically 3x that of sealed pumps

The right choice for more reasons than the lifetime cost

All in all, there are substantial savings with sealless magnetic drive pumps in terms of reduced servicing, their diversity in terms of what can be pumped, and reduced demands on staff time. By design, sealless technology is the right choice for situations involving high temperatures, high pressures and volatile substances.

Think Sealless – To find out how, please click here.