What is a Mechanical seal?

A mechanical seal consists of two extremely smooth and flat surfaces (called "faces") held together to prevent any passage of fluid between them. One face must rotate with the shaft and is called the rotary.The other face is fixed and is called the stationary.The primary seal occurs at some position between the two surfaces.It is a device used to seal fluids on a rotating shaft,consisting of two flat rings,one rotating,the other stationary,mounted perpendicular to the shaft.A seal is achived by keeping the rings in contact with each other as the shaft turns.A mechanical seal is a method of eliminating visible leakage of fluids or gases from rotating equipment.The narrow seal face should be softer than the wide seal face.

The Seven basic Seal Components