mechanical seal is being used increasingly on fluid pumps to replace packed glands and lip seals. Pumps with mechanical seal perform more efficiently and generally perform more reliably for extended periods of time mechanical seal are provided to prevent pumped fluids from leaking out along the drive shafts.

Mechanical seal are commonly used in a wide variety of industrial applications for sealing process fluids in rotating equipment. Often, the presence of suspended solids or gas bubbles in fluid sealing environments can be detrimental to mechanical seal life and operating efficiency.

The most reliable and economic way to control fluid leakage from industrial equipment such as centrifugal pumps and mixers is to isolate the rotating shaft and its housing with a mechanical seal. These devices, though simple in concept, present a variety of engineering challenges to the designer.