A mechanical seal is a mechanical device that is used to seal a cylinder or vessel

Author:admin Date:2022-12-20

Types of Mechanical Seals

Essentially, a mechanical seal is a mechanical device that is used to seal a cylinder or vessel. The seal functions by generating torque, which is transmitted through a mechanical mechanism. Mechanical seals are available in different types, depending on the application. The main components of a mechanical seal include the stationary seat, the rotating seat, and the mechanical seal faces. These are often made of different materials.

Generally, the mechanical seal faces are made of a hard material. Some of these materials are tungsten, ceramic, metal, and carbide. These materials are hardened to prevent wear. They are also resistant to abrasive processes. The seal faces may also be coated. This can be done to reduce friction and help prevent leaks. The faces may also be made of a softer material, such as a polymer.

The mechanical seal faces can be designed to move in response to misalignments. This is often done by using a wave spring. The drives for these spring-like features should be included in the design. Depending on the application, the face material may be able to be deflected by a garter spring or other means. The material may also be lubricated for frictional incidental contact.

Another common type of seal is a cartridge seal. This seal is designed for low-pressure and medium-temperature applications. The seal contains two or more seal faces that are mounted to an elastomer o-ring. This design is often used in the pharmaceutical industry to prevent leaks. The cartridge seal is typically made from Carbon Graphite or a carbon-ceramic combination. The seal faces may be coated in food quality grades.

The seal faces are lubricated by a thin fluid film. This film forms when the seal faces are mechanically energized. The fluid film is then lubricated by process fluid. This seal is used to prevent leaks in a range of applications, from hazardous material to non-hazardous material. This seal type is often used for low-pressure applications.

Another type of mechanical seal is the "Bellows" type. This type of mechanical seal uses multiple small springs to exert even closing pressure on the seal ring. The spring length is designed to provide the correct pressure. The springs are designed to be less prone to distortion at high speeds. The design also ensures that there is a functional minimum gap at the seal's interface.

A second type of mechanical seal is the dynamic secondary seal. This seal is used to prevent leaks between the seal face and the component. It consists of two secondary seal faces that surround the primary seal faces. These secondary seal faces are made from elastomeric materials. They are usually cavity designed. The secondary seal faces can be o-rings, gaskets, or other flexible members. These seals stop leaks when the secondary seal face is deformed against the component.

The choice of seal materials is very important. The materials used will depend on the application and service. For example, a carbon seal can be used in a chemical process or in a non-abrasive environment. Other materials may be needed for high-temperature applications or applications that have assorted particles.