Mechanical Seals Catalog

Mechanical Face Seal Assembly

A mechanical face seal is typically used in rotating equipment such as compressors, pumps, mixers or blowers. The seal is designed to prevent leakage between a shaft and the housing.

Mechanical seals have two opposing faces; one rotates while the other is stationary. A spring provides the mechanical force necessary for sealing the ceramic faces. The most common sealing face materials will usually consist of ceramic, silicon carbide, tungsten carbide or carbon. Many other materials are used depending on the application. Temperature and different types of chemicals play a role in determining the material. O-rings are also part of a mechanical seal. The o-rings act as a fluid barrier, usually stationary and do not rotate with one another like the ceramic faces do. Common o-ring materials include Nitrile, Silicone, FKM and Kalrez.

There are many other design aspects to a mechanical seal. Mechanical seals can be of balanced or unbalanced construction. Balanced seals can tolerate significant pressure. Unbalanced seals are made for situations where there is a higher tendency for misalignment or vibration.

If you have an application for a mechanical seal, contact our Sales or Engineering department at 1-800-837-4272.

The following diagram is an exploded view of a mechanical seal.

mechanical seal assembly