The stable of industrial pumping technologies welcomed a significant new addition around 30 years ago when pumps that could be termed, interchangeably, as seal-less, seal-free or leak-free were introduced to the chemical-processing market. Early iterations of seal-less pumps were required to perform one primary task: better prevent the leakage of hazardous materials than sealed pumps through a seal-less design. However, these first generation seal-less pumps were not readily embraced in the beginning for two main reasons.
- Potential users were leery that the early seal-less designs could, in fact, live up to their leak-free promise
- Seal-less pumps were generally more expensive than their sealed counterparts
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