Do Mechanical Seals Leak? Learn About Seal-less Applications

All mechanical seals leak, but these leaks are a managed leak. We want to make sure that we can maintain if there is any environmental issues from that standpoint.  We don’t want it to be an environmental issue.

The customer also has to remember what the application is. Depending on what we are pumping, some fluids are a lot harder to seal than others. Let’s look at some examples:

Do Mechanical Seals Leak? Learn About Seal-less Applications, C&B Equipment, INC.Crude Oil

Crude oil is something that is very slick and lubricating and is a lot harder to seal than something that is like water.


Water is non-lubricating, so it’s much easier to seal, depending on whether we are talking about rendered pork fat, or whatever application it may be.

It doesn’t matter whether it is Chesterton, Burgmann, or AES, all seals are designed to leak to a point.

Seal-less Applications

If it’s an application where zero leakage is ideal for an environmental issue or something to that effect, a lot of times we will go to a seal-less design where we are having virtually no fluid that can ever pass. For instance hydrofluoric acid, which is obviously an environmental issue, we don’t want to have any leakage. Maybe it will be propane, which is very flammable liquefied natural gas, so we don’t want to have any leaking. So, we may use a Mag Drive where there is actually no fluid available to the atmosphere at all. So do mechanical seals leak? Yes, we just want it be a managed leak.

For more information, check out this video!

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