agitator mechanical seal design brands

Mechanical Seals play an important role in the chemical process industries. These devices prevent product leakage and toxic emission during the mixer service under pressure. Since the ...

... secondary lip seal (MTM602/605/607) or with a secondary labyrinth seal (MTM603/606/608). They are easy to install and they are provided with significant thicknesses in key parts such as sleeved shaft ...

... MTM351), a single seal with a floating bearing inserted (MTM352), cartridges seal with double seal (MTM361) and double seal with the floating bearing (MTM362). There ...

... entry mixers and bottom entry agitators on sealed tanks will have a mechanical seal of some sort. For many sanitary process vessels, the mixer must have ...

... 30 years of split seal experience, from sophisticated marine propeller shaft seals to thousands of industrial pump and mixer applications, John Crane has established itself as the worldwide ...

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​This double mechanical seal allows for a new, higher level of reliability and performance with the convenience of a cartridge seal. The Chesterton ...

The SEPCO OMS is an externally mounted single component seal capable of handling up to 1/4" shaft deflection. This makes it ideal for use on augers, belt driven pumps, mixers, agitators and slow moving ...

... papermaking, nuclear power, power plant, metallurgy, food, pharmaceuticals, etc. Main products are mechanical seal, dry gas seal and many kinds of seal control systems, ...

Effectively seal your agitators with Inpro/Seal Air Mizer® shaft seals. Unlike packing, or other ineffective sealing methods, proven Air Mizer shaft seals are a non-contacting permanent sealing solution, requiring zero maintenance or rebuilds.

​​​​​​​​​​​​Our innovative, award-winning mechanical seals for pumps, agitators, mixers, and other rotating equipment simplify installation, improve reliability, and extend the performance of fluid handling. Companies around the world turn to A.W. Chesterton Company for expertise in mechanical seals — in design, selection, installation, field service, and more.

Mechanical seals have been used in agitator technology since 1950. EKATO is one of the pioneers, using mechanical seals in agitators and continues to produce them today. EKATO offers a wide range of robust seals and reliable accessories for cooling and supplying the seals with sealing medium. A distinction is made between dry-running and gas- and liquid-lubricated mechanical seals.

Mixer/Agitator mechanical seals are engineered to reliably operate in a wide range of temperature and applications. We partner with the industry-leading mechanical seal manufacturers such as — Flex-A-Seal — to deliver mixer/agitator seals that are engineered to withstand demanding fluid-handling applications. All of our mixer/agitator mechanical seals regardless of application, are designed to provide extended seal life.

Anderson Process offers mechanical seals that are capable of providing innovative solutions for your toughest mixer and agitator challenges. Every mixer, agitator, and reactor model is distinctive and engineered for a specific application. Many of these applications require seals to perform in environments that would destroy common seals due to extreme drag and shear forces, abrasive materials, or other challenges. Seal options are available for top entry, bottom entry and side entry mixers. All mixer applications are unique and we are capable of custom designing a seal to fit any application.

There are a multitude of sealing challenges that exist such as space limitations, system shocks, abrasives, dry media, high pressure, zero emissions, expensive batch products and many more. To solve these problems, we recommend mechanical seals that have high run out capabilities, zero emissions design, barrier fluid options, single or dual cartridges for easy installation, and welded bellows or multi-spring designs.

The use of the word “seal” is a misnomer; as a mechanical seal is a restrictive flow path,that is either an angular or radial gap.The flow through this gap is generally so low it goes unnoticed if a liquid or inconsequential if a gas.

A mechanical seal works byretaining a liquid or gas inside a rotating piece of equipment. Mechanical seals can be designed to prevent contamination of the process by the environment and prevention of leakage of the process into environment.

The basic components of a mechanical seal are a Rotating Part and a Stationary Part. The primary seal of a mechanical seal consists of a rotating face and a stationary face. The faces are kept lubricated by maintaining a thin film of fluid between each face. There is a very small gap between these 2 components which creates a restrictive flow path.

There are other components namely o-rings or gaskets which are used as secondary seals and hardware which is used to support the seal faces and to attach them to the rotating part (i.e shaft) and stationary part (i.e cover plate).

The primary seal of a mechanical seal is made up of 2 seal faces where these two parts meet is where the seal gap is located. The mating surface of the seal face is machined to a very tight tolerance.

Double Seal (Barrier) => consists of two primary seals in various arrangements. There is a barrier fluid between the two primary seals which is at a higher pressure than the process. There is always some leakage of the barrier fluid in process & out to atmosphere. As long as barrier pressure is maintained there is no leakage of process to atmosphere or contamination of process by environment.

Double Seal (Barrier) – Wet => is a double seal where the barrier is a liquid. It is generally the most robust seal. It has a good pressure, speed and temperature capabilities.

Gas Contacting Seal– the seal faces are in contact, the soft face wear acts as a lubricant. Low pressure, speed and temperature capabilities and possibilities of wear getting into the process.

Gas Non Contacting Seal – the seal faces are NOT in contact. They are kept apart by a flow of gas between the faces. Good temperature, speed and pressure capabilities. If operated correctly their is no wear but care must be taken in order to minimise shaft run out.

Cartridge seal =>is where the rotating and the stationary hardware are pre-assembled before mounting onto the pump/mixer. Cartridge seals are much easier to fit & maintain compared to the component seal.

A lip seal is a specific type of seal, it is a radial seal, where the part that seals against the rotating surface is a narrow cross section, soft material i.e the lip and it is made from an elastomer or non-elastomer material with a backup spring. Most commonly used to seal bearings in Mixers/Agitators. A lip seal rotates too quickly to be used on pumps.

Abarrier fluid is any gas or liquid which is used to pressurise a double mechanical seal. It must be compatible with the process, generally non-toxic and a good lubricant.

Please consult the pump manufacturer/distributor for guidance on these calculations for mixer seals, the barrier pressure is set at a certain value above the maximum vessel pressure.

Packing is a material that is stuffed between a rotating shaft and a stationary part gland to maintain pressure. Packing is a low cost alternative to mechanical seals.

We supply mechanical seals into the pharmaceutical, bio-technology, chemical processing, mineral and ore processing, semi-conductor and general industries.

Depending on your particular application, if you are looking mechanical seals to suit a pump application; Mechanical Seal for Pumps, or if you are trying to source mechanical seals for an agitator or tank mixer; Mechanical Seal for Agitator, or perhaps you have a hygienic application in mind, take a look at our range of Mechanical seal for Hygienic & Aseptic applications.

Our Mechanical Seal specialists can advise you on the appropriate selection of a seal support system which will deliver years of reliable service and operating cost savings in the longer term.

If you have any query around how to install mechanical seals or have some concerns around seal failures, why not contact one of our seal specialists below to discuss it in more detail and find out how we can help solve your issues and get your process running reliably again.

In industries like chemical, pharmaceutical, pulp and paper, and food and beverage, safeguarding and compliance with industry standards, avoiding contamination and efficiency are always top priorities. You can use John Crane’s range of mixer and agitator mechanical shaft seals for reaction vessels to optimize safety and equipment performance, and conform to industry regulations, no matter where you are. Modern dry running mechanical seal technology and optional hygienic design features maintain product purity in mission-critical pharmaceutical applications.

The scope of our mechanical seal product range far exceeds any other seal manufacturer. From small elastomer bellows seals used in millions of domestic water pumps to double mechanical seals that ensure maximum sealing safety and large, highly customized dry-running gas seals for mission critical high speed turbo compressors, John Crane has the right product for any application.

Our world-class rotating equipment technologies, paired with an unmatched breadth of applied engineering expertise, meet virtually all international standards including API 682 and help plants reduce maintenance costs, slash down time and improve reliability. When it comes to keeping your rotational equipment running 24/7, John Crane’s comprehensive range of mechanical seals and systems has you covered.

A range of seals for mission-critical applications, designed to solve the application-specific challenges of each industry. From API 682 compliance for the oil and gas industries, using gas seal technology on our innovative pump gas seals to eliminate fugitive emissions, dealing with slurry in the mining and minerals processing industries, to the difficulties associated with maintenance on large pumps and rotating equipment — we have a solution.

Dry-running, non-contacting gas seals have been the industry standard since the early 1980s for turbomachinery. John Crane gas seals, separation seals and support, monitoring, control and conditioning systems — the heart of any reliable sealing solution — are constantly evolving to meet the needs of customers. The product portfolio is supported by unrivaled global service capability providing repair, retrofit, gas seal storage and reliability expertise, delivering total solutions throughout the product lifecycle.

In industries like chemical, pharmaceutical, pulp and paper, and food and beverage, safeguarding and compliance with industry standards, avoiding contamination and efficiency are always top priorities. Our range of vessel and agitator seals optimize equipment performance, maintain product purity and conform to industry regulations, no matter where you are.

Our range of mechanical seals, packing and bearing isolators combines advanced, thoroughly proven technologies with extensive industry expertise to create a range of products characterized by innovative design concepts and outstanding manufacturing quality. Tried, tested and effective solutions for virtually any application that deliver robust performance, reduced installation times and lower maintenance costs.

Create the optimum operating environment that will ensure outstanding seal performance and reliability. Our comprehensive range of engineered pressure reservoirs, gas seal control panels, heat exchangers and abrasive separators can be combined to produce the perfect seal support system for any application.

Designed to overcome rigorous challenges, our comprehensive suite of seal face technologies combat limited seal face lubrication that adversely affects reliability, cost and durability. Our engineers designed these face treatments to extend rotating equipment life through advanced micro machined patterns and features improving seal face lubrication that optimizes equipment performance. We deliver the right face technology for the right application.

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​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.

KLOZURE® Mechanical Seals are engineered to meet the demands of challenging sealing applications. Through the innovative use of materials, configurations, and custom designs for pumps, mixers, and agitators, KLOZURE® Mechanical Seals can handle abrasive, viscous, or adhesive media. KLOZURE®’s high-performance seals minimize equipment downtime, environmental leakage, and lost product.

To improve pump and mixer time between overhauls and reduce the total cost of ownership of specialized equipment, utilize the engineering and materials expertise of the KLOZURE® Mechanical Seal Family. Ideal for Food, Pharmaceutical, Pulp and Paper, Asphalt, and Chemical Production, the KLOZURE® Mechanical Seal portfolio is infinitely customizable.

KLOZURE® Mechanical Seals with P/S Technology utilize flexible GYLON elements for a non-clogging design perfect for abrasive, viscous, or adhesive media, as well as offering high run-out capable solutions.