agitator mechanical seal free sample

Low maintenance, FDA-compliant, no entry of barrier liquid - this was a must for the mechanical seals with which fermenters in a pharmaceutical plant were to be retrofitted. Switching to the nitrogen supplied SeccoLip lip seal proved to be the optimum solution.

As part of a quality assurance campaign, liquid-lubricated seals in paddle dryers were replaced with the CIP-capable, dry running SeccoMix R to reliably prevent contamination. Axial movements at the shaft required special modifications.

Gas-lubricated seals for agitator shafts are the first choice to reliably prevent contamination of the process medium. This example of a pharmaceutical production in Norway illustrates how the switch from oil-lubricated to nitrogen overlayed seals can be performed successfully.

To comply with increasingly stringent FDA guidelines, a multinational pharmaceutical company has successfully upgraded agitator vessels in its highly sensitive vaccine production with HSMR double seals and DiamondFace technology. With a welcome side effect.

Inadequate lubrication and sliding surfaces in hard-hard pairing caused frequent failures of a fermenter in the production of biocultures in Asia. The MR-D double seal with DiamondFace technology successfully counteracted this problem and significantly extended the MTBF.

In an Asian vaccine production facility, the shaft seals of the vessels had to be modernized. The challenges: High requirements regarding ATEX and hygiene, mobile handling of the vessels and elimination of the previous noise development.

Changing operating conditions placed extreme demands on the pump seals in a production facility for antibiotics. An upgrade with DiamondFace technology significantly extended the seal’s MTBF and allowed for cost-saving rationalizations.

Avoiding product contamination, increasing maintenance efficiency, ensuring a high level of reliability and ATEX zone 0 compliance - these were the specifications for a seal standardization for over 40 agitators from different manufacturers of an active ingredient production in Switzerland. The dry-running double seal "SeccoMix" proves to be the right solution even after many years.

Burgmann cartex single cartridge seal is a world famous cartridge mechanical seal, this seals is popular used for pumps, agitator, mixer, and other rotating machines.

cartex signle cartridge seal is a standard mechanical seal, compared to the modular design with many complex parts, Cartex has been specifically engineered with a simple, robust design to achieve higher overall reliability and performance in extreme conditions.

Guangzhou Lepu machinery CO., LTD becomes one of the leading mechanical seal supplier in south of china, we focus in designing and manufacturing mechanical seal for many kinds of famous brand pumps, our mechanical seal cover many kinds of industry like food, petrol chemical, paper making, sea ship, and so on.

3. It has strong heavy wind resistance. Impact modifier and stabilizer have been added to its material and structure to guarantee this capacity. Equipped with professional operation system, Lepu seal"s quality is ensured

John crane mechanical seal type 502 is one of the best-performing elastomeric bellows seals available. Working well for general service and provideing excellent performance in a wide range of hot water and mild chemical liquid. It is specifically designed for confined spaces and limited glands lengths.

the Type 502 mechanical seal is widely recognized as the industry"s workhorse., this mechanical seal is ideal for use in pumps, mixers, blenders, agitators, air compressors, blowers, fans and other rotary shaft equipment.

John crane mechanical seal 502 is also a featured seal item in our factory, we do offer high quality with very nice price for our professional mechanical seal clients in the past years.

Guangzhou Lepu machinery CO., LTD becomes one of the leading mechanical seal supplier in south of china, we focus in designing and manufacturing mechanical seal for many kinds of famous brand pumps, our mechanical seal cover many kinds of industry like food, petrol chemical, paper making, sea ship, and so on.

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton is the world leader in design innovation of split seals. Our innovative split seals have been used to seal thousands of process-critical pieces of rotating equipment with exceptional​​ ​results and many years of leak-free operations.

Chesterton was the first company to offer commercially-viable split seals for plant-wide use, which revolutionized pump sealing across industries. Since that time, we"ve launched a number of innovative split seal designs now used as a standard by companies around the globe.​ We offer shaft diameters ranging from 25-914​ mm (1-36 in.)​

​A split seal has components split into two equal halves which are secured as one unit on the seal shaft. The major advantage of the split seal design is that it allows you to install the seal with no dismantling of the pump (or equipment)—an enormous time-saver! Chesterton"s split seals offer virtually leak-free performance. This leads to improved safety and environmental compliance and nearly eliminates sleeve wear, and flush water usage,  among many benefits.

Double-acting liquid-lubricated mechanical seals are the most common type for mixing applications. These seals can be used under nearly all operating conditions in a mixing vessel. They can also be designed as a gas-lubricated version in which a continuous supply of gas into the seal chamber maintains a marginal gap, thus preventing wear of the seal rings.

No carbon dust contamination, eliminates process contamination from mechanical seal face wear. True dry-running design, balanced double cartridge seal, can be run with a barrier fluid.

A mechanical seal is simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft.

When sealing a centrifugal pump, the challenge is to allow a rotating shaft to enter the ‘wet’ area of the pump, without allowing large volumes of pressurized fluid to escape.

To address this challenge there needs to be a seal between the shaft and the pump housing that can contain the pressure of the process being pumped and withstand the friction caused by the shaft rotating.

Before examining how mechanical seals function it is important to understand other methods of forming this seal. One such method still widely used is Gland Packing.

The stationary part of the seal is fitted to the pump housing with a static seal –this may be sealed with an o-ring or gasket clamped between the stationary part and the pump housing.

The rotary portion of the seal is sealed onto the shaft usually with an O ring. This sealing point can also be regarded as static as this part of the seal rotates with the shaft.

One part of the seal, either to static or rotary portion, is always resiliently mounted and spring loaded to accommodate any small shaft deflections, shaft movement due to bearing tolerances and out-of-perpendicular alignment due to manufacturing tolerances.

The primary seal is essentially a spring loaded vertical bearing - consisting of two extremely flat faces, one fixed, one rotating, running against each other.  The seal faces are pushed together using a combination of hydraulic force from the sealed fluid and spring force from the seal design. In this way a seal is formed to prevent process leaking between the rotating (shaft) and stationary areas of the pump.

If the seal faces rotated against each other without some form of lubrication they would wear and quickly fail due to face friction and heat generation. For this reason some form of lubrication is required between the rotary and stationary seal face; this is known as the fluid film

In most mechanical seals the faces are kept lubricated by maintaining a thin film of fluid between the seal faces. This film can either come from the process fluid being pumped or from an external source.

The need for a fluid film between the faces presents a design challenge – allowing sufficient lubricant to flow between the seal faces without the seal leaking an unacceptable amount of process fluid, or allowing contaminants in between the faces that could damage the seal itself.

This is achieved by maintaining a precise gap between the faces that is large enough to allow in a small amounts of clean lubricating liquid but small enough to prevent contaminants from entering the gap between the seal faces.

The gap between the faces on a typical  seal is as little as 1 micron – 75 times narrower than a human hair.  Because the gap is so tiny, particles that would otherwise damage the seal faces are unable to enter, and the amount of liquid that leaks through this space is so small that it appears as vapor – around ½ a teaspoon a day on a typical application.

This micro-gap is maintained using springs and hydraulic force to push the seal faces together, while the pressure of the liquid between the faces (the fluid film) acts to push them apart.

Without the pressure pushing them apart the two seal faces would be in full contact, this is known as dry running and would lead to rapid seal failure.

Without the process pressure (and the force of the springs) pushing the faces together the seal faces would separate too far, and allow fluid to leak out.

Mechanical seal engineering focuses on increasing the longevity of the primary seal faces by ensuring a high quality of lubricating fluid, and by selecting appropriate seal face materials for the process being pumped.

When we talk about leakage we are referring to visible leakage of the seal. This is because as detailed above, a very thin fluid film holds the two seal faces apart from each other. By maintaining a micro-gap a leak path is created making it impossible for a mechanical seal to be totally leak free. What we can say, however, is that unlike gland packing, the amount of leakage on a mechanical seal should be so low as to be visually undetectable.

Zigong Ke Yu Seal Science and Technology Co.,LTD located in hightech industry of zigong city in sichuan province. We are large manufacturer and exporter of high pressure,high temperature, high speed mechanical seal. Our products widely used in KSB pumps, Grundfos pumps, Flowserve pumps, etc. And our mechanical seal can exactly replace original mechanical seal in sharpe agitator, ekato agitator, lightnin agitator, sardik agitator, mut agitator, mixpro agitator etc. We design and manufacture mechanical seal up to 60 bar, 3000rpm, 300C°in different material of constructions like ss316/316L,ss304, Sillicon Carbide, Tungsten Carbide, Carbon, Viton, NBR, EPDM ,PTFE, etc. From pumps to reactor for various application. We can also provide ODM and OEM precision machined parts according to your drawings or design requirements. For exmple,customized shaft, shaft sleeve, as well as a variety of high-precision, high request products. Materials that can be produced include stainless steel, titanium and any other metal material of different grade.

Modern pumps, compressors, mixers, agitators and other rotary shaft equipment are assembled using either compression pump packing or mechanical seals to minimize emissions and fluid.

Compression pump packing controls leakage whereas mechanical seals will tend to stop any visible leakage all together, keeping work environment clean and hazard free.

Compared to compression packing the initial cost of a mechanical seal is high, however overtime, the associated cost accrued by using compression packing, for example power consumption, maintenance and downtime, could be far in excess of the initial cost of a mechanical seal, which works unattended for a long time.