Five Beneficial Tips for Purchasing a Mechanical Seal

What is the mechanical seal? It is like a cap that prevents leakage of the rotating shaft. At “Micro Seals”, we provide complete mechanical seal specifications. Which will help to purchase a better mechanical seal for your industry.

“Micro Seals” is ISO 9001:2015 certified company which is not only manufacturer of high quality mechanical seal but also the supplier of mechanical seal to all around the world.

Here are our following tips for purchasing good mechanical seals:

• Proper seal selector
• Good design
• Installation of mechanical seal
• Mechanical seal face opening force
• Inadequate environment controls

Proper mechanical seal selection can lead to a better mechanical seal. The chemical resistance of all the wetted seal components must be looked at the three general materials the metal component, the secondary seal and the primary seal phases.

The metal component like spring, gland and sleeve holder must be investigated for the proper corrosion resistance because this is critical with thin metal parts such as metal bellow and springs.

The secondary mechanical seal will work well when the elastomer bellow works well and all it’s temperatures elastomer subject to too high a temperature will compression set or high harden leading seal failure chemical attack can cause an incorrectly selected elastomer to become stick or swollen and lose its physical properties.

Material selection is the mechanical seal face are the material acceptable in the concentrations and temperature of product that they seal for instance corban may be attacked by strong oxidizing chemical like nitric and sulfuric acid at certain concentration and temperature make sure the face material are constructed of pure unfild materials otherwise binder and fillers can be attacked as well.

The correct seal design must be chosen for the application design areas such as balance versus unbalance and fretting versus none fretting versus must be considered.

Does the seal necessary anti clogging feature is it relatively easy to install all the part properly these considerations must be answer to select the right seal for the application.

Now after purchasing quality mechanical seals come to the installation point. When making the shaft initially reading installation print incorrectly using wrong print or making measurement incorrectly many time during seal installation the stationary and rotary seal face and even the secondary seal such as rings becomes damage by handling if proper precaution not taken.

Let’s begin seal face opening can be caused by redial and unbalance force on the impeller these force can be cause shaft deflection and vibration pump cavitation and poor coupling alignment also determine effects on mechanical seal.

A very common cause for mechanical seal face opening is stuffing box misalignment that is the stuffing box is not perpendicular to the centerline of the shaft.

Create a proper environment for mechanical sealing reliability. Lose the environment control and reliability is lost usually imminent lose environmental control can happen for a verity of reason like source pressure and simply a valve being closed.

Pumping system are frequently characterized at static system but tank levels are changing causing system curves to change.

Each of these ultimately determines the life of your mechanical seal so be sure to choose the type of mechanical seal you should purchase.