Mechanical Seal


A positive sealing device used to seal all fluids (liquids and gases).

In this illustration the primary seal is a set of lapped seal faces that are installed perpendicular to the shaft. The secondary seal is a TeflonĀ® bellows

The illustration describes a special version of a mechanical seal that mounts outside of the stuffing box, so that none of the metal components will come in contact with the fluid. This type of seal is used on non-metallic pumps.


  • On February 16, 2018