Mechanical Seal Concept and Composition

Mechanical seals are one of the basic mechanical components with precision and complex structure, and are the key components of various pumps, turbo compressors, submersible motors and other equipment.

Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc.

Mechanical Seal Basic Concept

Mechanical seal refers to a device that prevents fluid leakage by keeping at least one pair of end faces perpendicular to the rotation axis under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal to keep fit and relatively slide.

The auxiliary seal of the compensation ring is a metal bellows called a bellows mechanical seal.

Mechanical Seal Composition

There are mainly four components

  1. Main seals: moving ring and static ring

  2. Auxiliary seal: sealing ring

  3. Pressing parts: spring, push ring

  4. Transmission parts: spring seat and key or fixing screw


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New Sealing Materials and Technologies


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