MECHANICAL SEALS & PUMP PACKING

What is mechanical seal and its types?

Mechanical seals are critical components in centrifugal pump systems. These devices preserve the integrity of the pump systems by preventing fluid leaks and keeping contaminants out. Mechanical seal systems are used on various seal designs to detect leakage, control the seal environment and lubricate secondary seals.

What is mechanical seal material?

In an engineering sense, the term generally refers to a class of materials that are characterized by their high hardness, high stiffness, low thermal expansion, and good wear resistance. For mechanical seals, these include silicon carbide, silicon nitride, tungsten carbide, and alumina oxide.

What are the parts of mechanical seal?

A basic mechanical seal contains three sealing points. The stationary part of the seal is fitted to the pump housing with a static seal –this may be sealed with an o-ring or gasket clamped between the stationary part and the pump housing. The rotary portion of the seal is sealed onto the shaft usually with an O ring.

Packing vs. Mechanical Seals