Mechanical Seal Pumps vs. Seal-Less Magnetic Drive Pumps

Most sectors in the United States employ mechanical sealing solutions in their pumps, whereas a rare few use seal-less ones in their applications. This is because magnetic or seal-less pumps don’t quite require the same amount of power required by the more heavy-duty, sealed pumps.

Here are a few points of difference between pumps with seal-less arrangements and those with mechanical seals.

Barrier Fluid

  • Mechanical Seals

In pumps secured with mechanical seals, the barrier liquid helps separate the pumped fluid from the atmosphere, and at the same time, lubricates the components, keeping friction at bay. This liquid can be monitored with the help of period checks, meters, and by keeping an ear out for unusual sounds.

  • Magnetic Seals

In pumps secured with magnetic seals, this same barrier fluid dries up fairly rapidly by using up a lot of energy, thereby generating a lot of heat that the fluid will then have to convert in order to maintain temperature. When the lubrication well runs dry, friction can overheat many components, leading to repairs and replacements.



  • Mechanical Seals

When it comes to design, mechanical seals clearly have the upper hand because they have both fretting and non-fretting mechanical seal designs, with smart mechanisms like secondary dynamic faces interacting with mounted primary faces and managing to prevent and reduce wear and tear on the metal faces.

  • Magnetic Seals

Magnetic seals don’t have a face-to-face, back-to-back, or face-to-back configuration because they secure the opening by holding them down with magnetic force. They don’t have any metal or elastomeric plates, to begin with. They overheat or pressurize because they’ve absorbed too much power, not because their faces have corroded under friction.


  • Mechanical Seals

Mechanical seal applications can be applied to mix all kinds of materials. All one has to do is change the composition of the components, and they can withstand all kinds of abrasive and corrosive chemicals, both liquid and solid.

  • Magnetic Seals                                                                                              

On the other hand, magnetic seals cannot tolerate solids because they have an irreplaceable component: magnets. The attraction force of a magnet would always impede the processing of material with solid components, especially if they contain ferrous particulates. Even if they do end up working, the magnet’s performance may diminish over time due to an accumulation of solid debris.

Topnotch Engineered Sealing Solutions Provider in Texas

We bring you years of expertise and experience in mechanical seal and service, from special pump mechanical seal parts for optimum performance to solutions for environment-specific applications. Our services also cover assembly seals for pumps and mixers, designed for long-lasting performance and minimum mechanical seal repairs and replacements.

So, pick up your phone and dial 1-800-662-0585 for your very own custom-designed mechanical seals.

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