George Cook invented mechanical sealyears ago. At that time it was named as ‘Cook Seal’. Earlier it was used forthe compressors of Perfume Sprayer refrigerators. But within a very little span of time it hasbecome very famous in industrial works. Today it has a great value in themechanical industry and that is why it is high in demand.

A mechanical seal is adjusted in anyrotating machine, which includes compressors and pumps etc. The mechanical sealis used to prevent any leak between a rotating tube and stationary pumpcasting. This helps more than the mechanical packing due to its specialspecifications.

A mechanical seal is actually anequipment works with four elements, a drive of functions, a primary sealingsurface and secondary sealing surface. The most important part of the applianceis the primary sealing surface, which is a combination of two rings adjusted ina hard material of like silicon carbide and a soft material of carbon.

All the stuffs need to be chosen on thebasis of chemical chattels, pressure and temperature. There are various typesof seals available. But it depends where and what kind of project one is goingto work on. In most of the cases one can use hydraulically balanced seal. Thesetypes of seals generally make less heat. These are capable of handling a vast range of pressure during itsuse. Depending upon the pressure of themachine during the usage one must purchase the best seal as per the pressure.If the machine releases 400 pounds per square inch, then one must choose aspecial version of balanced seal.

For misaligned machines, a stationarymechanical seal would be the best seal. A pump with a driver or stuffing box,which is not adjusted properly into the rotating shaft, would be the bestexample for this. A stationary seal is beneficial for a pump works with a greatspeed. For the projects involves a work with high temperature then one must useseals with metal bellows. It is also good for the machines, which work inextreme cold. For Two-way system machines dual mechanical seals are the bestchoice. It also works as spare gaskets especially in the case of emergency likesudden power cut.

Some mechanical seals are there which arein use to connect non-metallic material like Plastic, Teflon, carbon and otherthings. These are basically used out of the parts, which are connecting. They might be liquids or gases. These areeasily available in market.