agitator mechanical seal quotation

There is no one universal seal for all mixer applications. 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. That means successful sealing requires clearly defining the type of equipment, the product, and the sealing conditions. Flexaseal’s design and engineer team are capable of providing innovative solutions for your toughest challenges.

This is best illustrated by the Flowserve standard cartridge seal. This was originally designed as a pump seal. It was then modified to be able to operate as a mixer seal (ISC2-MW). The main difference is that the mixer version is designed to work with increased run-out associated with mixers.

– Cleaning – a mechanical seal for agitator is generally run during CIP (Clean In Place) at low speeds. A mechanical seal can be SIP’d internally for sterilisation.

We supply mechanical seals for agitators & tank mixers to the pharmaceutical, bio-pharma, chemical processing, mineral and ore processing and general industries.

If you have a technical query around the installation of mechanical seals for agitators 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 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 Type CK 736 is a dual-pressurized, liquid-lubricated cartridge seal for glass-lined mixing and agitating equipment with top-entry agitator shaft. An integrated radial bearing secures an optimal shaft alignment and proper seal operation. A value-engineered design, high level of standardization and broad material options make this seal a cost-efficient solution for general-duty applications in the chemical and pharmaceutical industry. Standard versions are compliant with vessel seal standard DIN 28138 Parts 2 and 3. They are designed for use on steel-made agitated chemical reaction vessels to DIN 28136, to fit on a mounting flange to DIN 28137-2 and agitator shaft end dimensions to DIN 28159. Hardware adaptations to fit to non-DIN equipment are available on request.

By exchanging the seal faces, a CK 736 wet seal can easily be converted to a contacting, dry-running seal. Type name then changes to CK 736D. Advantages of contacting dry-running seals include freedom from contamination by barrier liquid and a low face wear rate, together with a cost-efficient, easy-to-install (gas) supply system. To simplify inventory, seal components are standardized with the other seal types of this family CK 725(D) and CK 726(D).

The seal is suitable for operation in potentially explosive atmospheres. Depending on individual explosion protection requirements, the seal operating limits may differ from the values given in the parameters section. Furthermore, additional monitoring devices may be required.

By having experience of more than 25 years, we are engaged in offering extensive collection of Double Mechanical Agitator Seals. Provided mechanical seals are used in pharmaceutical and chemical industries. Offered mechanical seals are manufactured at our state-of-the art manufacturing unit using quality tested raw materials and latest technology under the strict supervision of our deft professionals. In addition, our highly valued clients can easily avail these Double Mechanical Agitator Seals in numerous specifications as per their exact needs at pocket friendly prices.

Seals come in all shapes and sizes. Always speak to a professional to ensure that the right seal is chosen for the job. User manuals for equipment may also list the correct replacement seal type. However, there are many to choose from so if unsure, do not guess.

From single to dual, there are six major types to consider.. For single seals these are: rotary external seals, mixer split seals or a mixer seals. For dual seals there are high viscosity cartridge seals, mixer cartridge seals or slow speed gas cartridge seals. Since a perfect fit is necessary, be sure to have the right seal in mind before making a choice.

Mixer seals are one of the strongest. Rough conditions that are typical for mixers can seriously damage the average seal. However, motion tolerance seals with the ability to shift automatically under pressure can withstand these harsh conditions. This is the only choice for a fully operational mixer. Cartridge, on the other hand, are not built specifically for mixers but rather for interchangeable use.

Sanitary seals are typically used for extra-large, heavy or hard to reach equipment. Most of these seals feature a split design so the equipment does not have to be dismantled to change out a seal. They are also self-lubricating since it is difficult to access the installed seals for maintenance. This keeps them from drying out and cracking. Single or double sanitary mixer seals are often available to meet a variety of needs. Some can be used interchangeably while some equipment requires only a specific seal and will not operate properly with a substitute.

Always make sure the correct replacement seal is chosen to avoid damaging the mixer or agitator and spending excess money to replace a seal an extra time. Most equipment will come with spare parts and seals are often on that list. Be sure to check the spare parts from the manufacturer before purchasing a new one. Also be sure to have a properly trained individual replace the old seal by installing a new one. Someone who is not familiar with the equipment and the installation process could damage both the seal and the mixer. The manufacturer is often able to send an expert to the site to install replacements for a fee if needed.

The Bottom Entry Agitator Mechanical Seals are a kind of liquid lubricated agitator seals that comes with or without bearings that works for additional shaft stability. The bottom entry agitator mechanical seal is designed and built in such a manner that it works especially for high pressure and high vacuum applications. The mechanical seals are internally balanced and manufactured that it fits in accordance with the product size where used. The seals are so designed that can help remain closed when there is pressure reversal or pressure fluctuations. In addition to this, the bottom entry agitator mechanical seal comes with different characteristics that include Standard design, Double Mechanical seal, Unbalanced, Cartridge, Independent of direction of rotation, and Bottom entry agitators.

Ashish Seals is an ISO 9001 – 2015 Certified Company, and a reliable manufacturer, supplier, and exporter of Mechanical Seal in Mumbai, India and international market. The company has state-of-the-art production machines that help in manufacturing a wide range of mechanical seals for different applications. Owing to the profound infrastructure facilities of Ashish Seals added advanced machinery and allied tool facilitates in meeting the complete product needs of the esteemed clients successfully. Besides, the expertise and in-depth knowledge of the team perfectly helps in carrying out designing and manufacturing the mechanical seals as per the requirements.

The mechanical seal works by creating a restrictive flow path, and thus it is used in full vacuum conditions for sugar plants and other industries like pharmaceutical, food industry, petrochemical, and refineries.

W58/W59B Is A Dual-Pressurized, Liquid-Lubricated Cartridge Seal For Glass-Lined Mixing And Agitating Equipment With Vertical Type Agitation Equipment.

Double mechanical seals are designed to maximum secure sealing safety. These seals virtually stop leakage of the fluid or gas being handled in pumps or mixers. A double mechanical seal has two primary seals with a barrier or buffer fluid area in between. Each primary seal typically consists of a softer, narrower stationary face accompanied by a harder, wider rotating face. This arrangement enables the softer seal to wear while maintaining the integrity of the harder faced seal during service. This is essential when pumping or mixing a dangerous or toxic substance.

Structural Features: double end, liquid lubricated, two identical pairs of seal rings in a back-to-back arrangement, use of the modular design opens up many different extension options, with short heat trap or water jacket for cooling.

Mechanical Seals are designed for Top, Bottom and Side Entry Drives in Agitators, Mixers OR Blenders and where Non-Aggressive and Non-Hazardous Media are Sealed with the use of Cooling Liquid preventing against Dry Running. Construction of MOC designed of these Seals purpose of holding whole Rotary Parts together with the help of Snap Rings which eases while Installation and Removal of Seals.

"Dry Running Mechanical Seals" are outside mounted balanced mechanical seal, which require no shaft or sleeve step for balancing seal shows good performance in high vaccum conditions. Since no auxiliary equipments are needed for installation, it is very cost effective & economical. These seal can be easily installed & repaired on the feild to minimized replacements costs & downtime.

Used in top entry mixer vessels in pharmaceuticals & chemical industries, Petrochemical industry, Food and beverage industry, Non-toxic media, Agitators, Mixers, Reactor

In continuation to our legacy journey as a customer-centric company "Expert Engineering" which started in 2021, we are now delighted to expand our business portfolio to Mechanical Seal and Seal Support System under the name of "Maffs Seals Pvt Ltd".

Reactor Mechanical seals are specifically designs  For mixer, agitator & Reactor Application. Reactor Seals can be Configured to operate Wet, Dry or with a gas barrier.  Reactor Seals are Available in a wide rangeread more...

A: There are varying symptoms of failing mechanical seals based on the seal type. In the case of dry seals, higher than normal nitrogen consumption is often an indicator of a problem as is hissing or puffing sounds from the seal housing. A red flag is also raised when a flowmeter is placed in-line and the indicator ball is above allowable limits (one to two standard cubic feet/hour per inch of shaft diameter) or if the indicator ball is bouncing in the meter. As for lubricated or “wet” seals, any that are losing liquid at an increased rate or have run totally dry prove to be problematic.

A: Close and careful monitoring of your seal is the best way to get an early diagnosis of seal issues. By proactively inspecting key elements you can take preventative measures to keep your seal running efficiently for longer. The three most important components to monitor are:

A: It is very difficult to determine an average seal life. The life of a mechanical seal depends on many variables. The severity of the service is the primary determining factor. Generally speaking, the higher the temperature, pressure and speed of the agitator, the lower the seal life. The chemicals in the vessel, especially in the vapor space, will also determine seal life. Certain chemicals attack the faces or O-rings causing corrosion. The runout of the agitator is also a very large factor, the general rule of thumb being that the greater the inaccuracy, the lower the seal life. Runout is caused by many factors, such as old or improperly maintained equipment, improper assembly of equipment, and running the agitator at the liquid level in the vessel. In general, the life of a lubricated seal is higher than a dry seal by a factor of two for the same service.

A: There are pros and cons to each type of seal and situations where dry seals are desired over wet seals and wet seals are favored over dry-running models. Wet seals are preferred where dangerous chemicals are involved in the process. The reason is that if the seal fails, the vapors will be trapped in the barrier fluid and will have little chance of entering the atmosphere. With a dry seal the vapors have a better chance of escaping. Typically wet seals have a better life expectancy. A major disadvantage when using wet seals is the potential for barrier fluid to enter the process and possibly contaminate the batch. This is a huge factor for pharmaceutical applications and other processes that have stringent demands for product purity. Therefore, dry seals are preferred where contamination of the process is a priority. Dry seals require less maintenance than wet seals because there is no lubricator to maintain and refill when the level is low. With face seals nitrogen leaks into the vessel and some carbon dust from the carbon faces will enter the process. The OptiSeal is the only seal where only nitrogen and possibly a miniscule amount of PTFE enter the vessel.

A: For wet seals, a leaking seal puts more barrier fluid into the batch contaminating it. The barrier fluid will leak into the atmosphere and onto the vessel head making a mess. Eventually the lubricator will run dry and the seal will fail and no longer hold the vessel contents which could contaminate the atmosphere. For dry seals a leaking seal consumes a lot of nitrogen. The seal will wear out putting a lot of nitrogen into the vessel and possibly over-pressurizing the vessel, especially small CTJ vessels (100 gallons or less). For face seals, a large amount of fine carbon dust will enter the vessel, contaminating the batch. Eventually the seal wears out, the barrier gas pressure cannot be maintained and the vessel contents will enter the atmosphere.

Next week we’ll continue this discussion with maintenance tips and action steps to help fix mechanical seal leaks and other problems (here"s the link to the second part of the post). Additionally, if you have any concerns about your seal and want a professional assessment of its efficiency, a licensed service technician can provide you with the expertise needed to optimize the performance of your entire system. Click on the link below to contact the DDPS Field Service department for technical support and other assistance.