Engineering in Kenya

Mechanical Seal Shaft

Posted by on Feb 17, 2018 in Mechanical Engineering | 0 comments


A Mechanical Seal Shaft is involved in all pumps containing rotating shafts. They usually form a barrier between the pump and the surrounding hence minimizing leakages. There are various shafts seals that reflect the diversity of the pump industry. A properly designed and installed mechanical seals improves the pump performance greatly. Engineering in Kenya has more articles.

468x60 002 Mechanical Seal Shaft
Mechanical Seal Shaft Mechanical Seal Shaft

Mechanical Seal Shaft

Components of Mechanical Seal Shaft

The shaft seal is only noticed when it starts to leak. It is therefore important not to underestimate the Mechanical Seal Shaft during pump design operation and maintenance

468x60 002 Mechanical Seal Shaft

Mechanic shaft seal consists of two main components: a rotary part and stationary. The key parts of Mechanical Seal Shaft include the floating seal ring and stationary seat collar. Both of these components are made of resistant material. The floating rings are situated below the axial force from a spring and this makes it to be in contact with its mating surface. Mechanical seals can work with a variety of fluids pressure ranging from 7000lb/in2 (482.5mpa) and slides in about 800 in/s (20.32 m/s).  The core parts of the seals are the rotating floating seal ring and the stationary

Mechanical shaft seal is a throttle that is arranged around the shaft with the intention of reducing leakages between the pump and the surrounding. There are different designs for mechanical shaft seal. There are those that have two axial seal faces. The two axial faces are usually pressed against each other making a strong seal. The pump and the shift must be highly wear resistant.

Types of Mechanical Seal Shaft

There are those with rotating seal ring and stationary seat. Sealing is obtained by fitting the rotating seal ring on the shaft and on the stationary seal ring (seat on the pump housing). This design uses a wide range of materials for the rotating Mechanical Seal Shaft ring and seats.

Other types are the secondary seals which consist of rubber parts such as O-rings or bellows. This are meant to reduce leakages between the shaft and the rotating seal rings and the stationary seats and the pumping housing. This design minimizes leakages by pressing the seal tightly against the seat.

Spring designed mechanicals seal shafts have a spring that presses the seal ring against the seat and the ring against the shaft. Other designs include those that have torque transmission element.

Factors to Consider When Choosing a Mechanical Seal Shaft

The packing and manufacture of seals by mechanical seal manufacturers are very important to mechanical engineers. The industries are unique and vary from packaging of their Mechanical Seal Shaft to expertise provision. Poorly manufactured seals can cause mechanical failures.

One should check that the seals have been tested by the manufacturer and is proven operating conditions. More so, the design of the machines should be considered when purchasing Mechanical Seal Shaft because the machines differ too. Other factors include durability of the seal. For example, will it handle the operating system, environmental dynamics and misalignment. Moreover, the cost, and maintenance and its safety should be considered too.

The highest production of mechanical seals by mechanical seal manufacturers are seals for domestic laundry machines and automotive water pumps. Both machines are involved in difficult work. For example, the seal from laundry machine is subjected to temperature changes, whilst the design of automotive pumps can be subjected to variable operating cycle and run at high temperatures and sometimes under very high speeds. The designs of these seals are a factor that compromise prices and production of any Mechanical Seal Shaft.