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Mechanical Seal 2012/Dec/12

The mechanical seal was sham by George Cook and was formerly called a "Cook Seal". It was first used in refrigeration compressors. In a small time, it was becoming popular in the manufacturing proceeding. The demands for the mechanicals seals had achieved the worth about 100 million dollars.

A mechanical seal is normally settled in revolving equipment, for example pumps and compressors. The mechanical seal is predictable to prevent the liquid pour out of the pump between the rotating shaft and the stationary pump casting. Actually, with the competitive provisions, it does better help than the mechanical packing which is extensively used in the early times.

Generally talking, a mechanical seal consist of four functional mechanisms: primary sealing face, secondary sealing surfaces, a means of actuation and a means of drive. And the center part of the machine is the main sealing surface which joins two rings in a solid material like silicon carbide and a softer substance like carbon correspondingly.

The correct materials should chosen basing on liquid's chemical properties, pressure, and heat. These two rings machined using a machining procedure called lapping in order to find the necessary degree of smoothness, as single rotating by means of the shaft and the additional being stationary. Then, there would be a number of secondary sealing surfaces want a fluid fence but are not rotating comparative to the different one. And the actuation is given to stay two primary sealing surfaces in intimate contact.

Since the mechanical seal is one of the particular item in the manufacturing, there exists above one type of this term according to wide-ranging functional elements. Some frequent types are introduced in the following, it is usually classified into two major categories depending on whether the secondary seal to the shaft the active or stationary.

The dynamic one called pusher and the stationary one called non-pusher. In addition, there exists an ordinary style called cartridge seal which is initially designed for installation in equipment where a part type seal was difficult due to the drawing of the equipment.

For example, it is seen to propose this type to fit pumps with varying stuffing box bore sizes and gland bolt patterns. What else, the gap seal is another type which is by and large employed in bearings and added constructions extremely susceptible to wear such as an O-ring.

If you have any requests for mechanical seals, please send us your detail requirement. We will provide you with the best service.

Any question you can contact us as following:

Ningbo Topbon Mechanical Seals Factory

Website: http://www.topbonseal.com/

Tel: +86-0574-88120885

Fax: +86-0574-88120887

Mobile: +86-13486694050

E-mail: seven@topbonseal.com

MSN:topbonseal@hotmail.com

Skype:huanghaibocene1123