mechanical seal installation brands

Depending on your specific needs and application, Flexaseal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.

We provide expert Mechanical Seal Repair of all major brands, including John Crane®, Flowserve®, Burgmann®, and more. With locations in Gonzales, LA, and Williston, VT, we are the reliable, convenient single source repair for all styles of mechanical seals.

Our comprehensive library of manufactured design solutions addresses applications in the field and pump-specific challenges providing upgrades and replacement seals manufactured to perform better and last longer.

Flexaseal’s experienced maintenance and repair technicians have worked with mechanical seals from the world"s largest pump and seal manufacturers, including John Crane® and Flowserve®. Below is just a sampling of the many manufacturers and styles that we have repaired. If your seal isn’t listed, just click “Request A Quote” to send us a message.

Each repair that comes to our repair departments in Louisiana or Vermont - whether it is a third-party design or a Flexaseal model - goes through a detailed, 5-step process to ensure customer satisfaction.

Flexaseal offers repair kits for on-site seal repair. These kits are specific to your Flexaseal cartridge and are a great way to have parts on hand for an emergency situation. All items in the kit are packaged and labeled to ensure efficient change-out.

Every mixer, agitator, and reactor model is distinctive and engineered for specific applications. When repairing a mixer seal, Flexaseal evaluates the conditions in which the seal operates. This evaluation ensures we are repairing your seal to your parameters.

Sometimes a failed seal is no longer a candidate for repair. Flexaseal provides straightforward solutions from our comprehensive seal lines or upgraded options designed for your unique operating environment.

The Flexaseal Gulf South location is a fully functional, self-sufficient mechanical seal repair and service facility for  mechanical seals. Our Southern U.S. shop - located between Baton Rouge and New Orleans in Gonzales, LA - is  a  brand new 5,000 square foot, state-of-the-art facility ready for your mechanical seal repair and service needs.

Machining Capabilities – Our Gulf Coast technicians have extensive knowledge and machining experience. These skills enable the team to quickly and efficiently process seal repairs, getting your equipment back into operation with minimal interruption.

Stocking Location – The Gonzales store front has a range of Flexaseal sealing products for immediate off-the-shelf delivery. We are also an assembly and stocking location forseal support systems including barrier fluid reservoirs.

Mechanical seals are intended for applications in which a rotating shaft and its housing are under a state of stress, including a combination of high pressure, temperature, and speed.

Most mechanical seals are specially designed to prevent leaks in particular applications and cannot be interchanged with those seals used in other mechanisms. A piston seal, for example, cannot be used as a flange gasket; they are shaped differently, made out of different materials, and feature different mechanical properties of a given mechanical seal always depends on the conditions in which it will be applied.

Also, depending on the narrowness or broadness of a given understanding of the words “mechanical seal,” certain kinds of seals may or may not qualify. Simple plastic lids qualify by the broadest definitions, while some of the strictest definitions might only include seals applied in industrial process equipment or in heavy machinery. In either case, mechanical seals perform the same task: to isolate and contain materials in an enclosure.

Correctly pairing seals with their applications is essential to the safe and effective use of the equipment in which they are installed. For example, Teflon is often chosen for use in hydraulic cylinders because it is resistant to corrosion induced by exposure to hydraulic fluids. Natural rubber, on the other hand, may degrade when exposed to such chemicals. The decision to employ a given seal material should always be chosen carefully; this will ensure sustained effective and safe operation of the seal and the equipment it protects.

PumpWorks is the go-to company for all your pump sealing needs. The Sealing Technology Division of PumpWorks offers over 30 years of hands-on experience in the application, selection, troubleshooting, and repair of mechanical seals. We repair all manufactures of seals for a wide variety of applications from general industrial to process industries such as chemical, petroleum refining, and marine.

PumpWorks offers trained seal specialists and extensive in-house repair capabilities to service and repair all brands and types of seals including (but not limited to):

Before PumpWorks conducts a seal repair, we conduct a review of your equipment to isolate problem areas and to determine how to achieve long-term reliability with your seals. Our review consists of:

Once a seal is selected, our trained technicians can modify stuffing boxes, substitute component materials, re-install the seal and pressure test the entire pump. The mechanical seal can also be field installed to assure a positive fit and true alignment.

Our Mechanical Seals are used in a wide range of pumps and rotating equipment worldwide to prevent liquids and gases escaping into the environment. We manufacture mechanical seal types to suit all industries and our investment in modular design means that we provide the best on-time delivery performance in the industry.

The AESSEAL® range of seals, seal support systems and bearing protectors are all designed to improve pump reliability and reduce maintenance costs. Our business is built around giving our customers such exceptional service that they need never consider alternative sources of supply.

AESSEAL® operates from 235 locations in 104 countries, including 9 manufacturing and 44 repair locations, and has more than 300 customer service representatives who visit industrial plants every day. Find Out More..

... pressurized gas barrier metal bellows seal utilizing APGS non-contacting seal face technology. Welded metal bellows eliminate dynamic O-ring hang-up in a compact cartridge that fits ANSI and DIN standard ...

• Drive mechanisms external to the product;• Seal faces positioned for maximum protection;• A dynamic elastomer moves on a non-metallic surface, eliminating fretting defects;• Hydraulically balanced;• Cartridge easy to ...

Burgmann H74-D Mechanical Seal called as PC04 are specialized in mechanical seals products. This device gives double seal and it can be rotated in any ...

The MTM10-11 is a conical spring mechanical seal developed by Microtem. It is mainly used for general services machinery at low and medium pressure. This unbalanced mechanical seal ...

The MTM 25_26, manufactured by MICROTEM, is a conical spring mechanical seal that can compensate positioning errors and withstand stresses created by vibrations. The contact surface can be made with silicon ...

... agitators on sealed tanks will have a mechanical seal of some sort. For many sanitary process vessels, the mixer must have some type of sealing barrier to provide either a dust tight vapor seal, ...

mechanical seal for automotive engine cooling water pump, referred to as water seal, mainly composed of two parts: rotating ring and static ring. Static ring is installed in the pump ...

The 3-D Seal is designed to be the foremost solution for high radial misalignment and high run out applications. By combining Garlock’s proven P/S®-II and expansion joint technologies into ...

Aura™ reduces operational and transactional costs using a patented polymeric sealing device. Aura reduces leakage rates by up to 15 percent, lowering the total cost of operation while protecting the environment. An enhanced rotor design ...

The AESSEAL® API Type A, B and C single-seal range offers the user an unprecedented range of API engineered sealing solutions to suit all application ...

Mechnical seal type 5030 / 5031 »with rubber bellowssingle-actingnon-anisotropicAreas of usestandard pumpwaster water pumpsupply engineeringgeneral industrial usemass production seal

When purchasing the units, if left hand rotation, special seal, or a particular position of cartridge (shaft end or cover end) is needed, it should be ...

Cartridge Seals by CinchSeal are customized mechanical seals for rotary air locks in bulk handling equipment. They are designed to replace lip and packing seals in screw ...

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​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.

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.

Depending on your specific needs and application, Flexaseal can help you identify the ideal products. Contact us to tell us about your needs and request a quote.

​​​​​​​​​​​​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.

If you are in need of an ASI©seal replacement, Gaddis Mechanical Seals is here to help. We offer replacement mechanical seals for a variety of applications, and our team is highly experienced in mechanical seal repair and installation. We understand the importance of keeping your machinery running smoothly, and we will work diligently to get your mechanical seals repaired or replaced as quickly as possible. With ASI© Mechanical Seals, you can rest assured that your mechanical seal repair needs will be handled promptly and professionally. Contact us today to learn more about our mechanical seal repair services.

When you need a repair or replacement for your damaged mechanical seals, there are a number of excellent reasons to choose Gaddis Inc. With over forty years of experience in the mechanical seal repair industry, our team of engineers and technicians have the knowledge and experience required to tackle any mechanical seal repair project. This expert team, combined with our state-of-the-art facility and cutting-edge equipment, allows us to offer some of the highest quality mechanical seal repair services that you will find on the market today.

The reasons to choose Gaddis Mechanical Seals for all of your mechanical seal repair needs don’t stop there. In addition to providing unparalleled mechanical seal repairs, we at Gaddis Inc. also strive to keep our rates as competitive as possible. By leveraging our numerous, long-standing relationships with our various suppliers and partners, we are able to pass our savings onto our customers and offer the best value that you will find on the market today. Last, but certainly not least, our dedication to customer satisfaction at Gaddis Mechanical Seals is truly second to none. If you would like to work with a company that is committed to going above and beyond your expectations then the mechanical seal repair professionals at Gaddis Inc. look forward to being at your service!

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.

The right seal support system is critical for promoting seal reliability. John Crane customizes support systems to meet a variety of seal specifications, contributing to safe, cost-effective, reliable operation and reducing harmful environmental effects. Our support systems comply with constantly changing design codes and standards, and meet the increasingly stringent demands on end users.

Our comprehensive suite of seal face technologies are designed to overcome rigorous sealing challenges, including limited seal face lubrication and severe-service duties that adversely affect reliability, operational costs and seal life. Designed by our engineering experts, John Crane’s face treatment options help your equipment power through low-lubricity and dry-running conditions by using advanced micromachined patterns and features to improve seal face lubrication to optimize the performance of rotating equipment in all process industries

Isomag’s advanced magnetic face technology delivers unparalleled performance. The lapped flat faces create a positive liquid tight seal preventing lubricant leakage and the ingress of contaminants in both static and dynamic conditions on horizontal and vertical equipment alike. By optimizing the magnetic energy loading, Isomag’s are capable of running at shaft speeds well above average (up to 15,000 feet per minute) providing the ability to effectively seal the bearing housings on a wide variety of applications

Do you want to minimize leakage from your pumps in an effective manner? This is a challenge operators and maintenance managers face on a daily basis, which can prove costly. John Crane offers a wide selection of packing materials in compression packing, automatic packing, floating packing, and injectable packing. Learn more about our variety of packing equipped to handle the vast majority of sealing solutions and available for nearly all applications.

Flexaseal offers replacement seals for a full array of compressors, mixers, pumps, and other rotating equipment. Direct replacements are available in standard inch and metric sizes and materials for major brands, including

With four (4) configuration options all incorporating additional engineered features such as reverse pressure capability, non-clogging multi-springs, rugged seal drive operation, and hydraulically balanced faces, the RKCS single and RKCD dual seals successfully contend with the industry’s toughest slurry challenges.

Flexaseal provides component seals for a wide range of challenging applications where cartridge seals are impractical or incompatible with current rotating equipment. This may be due to equipment not having a seal chamber or the seal need to be installed on the wet side of a pump. We offer a sturdy single spring component seals, externally mounted mechanical seals for extremely corrosive applications, and stationary seats (mating rings).

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.

The mechanical seal style GFR/GFL offers a number of benefits over liquid lubricated dual seal for API plans 53 and 54. These include lower maintenance costs for the seal and support system since there is no barrier fluid to fill and the ability to retain 100% product purity through the use of nitrogen as a lubricant.

Simple support system – utilizes API 682 Plan 74 instead of more complex Plans 53 or 54, lowering the cost of operation and maintenance of the seal support system

Viscous substances such as syrups, tars, thick oils, resins, and glues prove to be challenging for most mechanical seals. Lip seal designs have been the go-to option for these processes that have centipoise values well above the normal range for seal face operation. The MLC3 cartridge seal achieves optimum pumping rates at lower speeds with fewer sealing issues than products currently in the field and requires virtually no seal support system.

Machined lip seals with deflected lip geometry ensures reliable sealing while producing a smaller footprint compared to competitor designs. This smaller footprint reduces parasitic torque and heat generation.

Single Lip Seal with anti-rotation ring and integrated back up ring: Energized front lip prevents leakage when transitioning between high viscosity and high fluidity processes. Anti-rotation rings statically seal even under normal temperature cycling. The integral back up ring provides added lip support under higher pressures and potential pressure spikes.

Double Lip Seal with anti-rotation ring: The PTFE-ML compound is formulated with a lower coefficient of friction, which coupled with the enhanced heat dissipation leads to lower under-lip temperatures. Lower temps = lower seal and sleeve surface wear.

Lantern Ring: Multifunctional PTFE ring provides additional bearing support as well as even dispersion of lubricant or barrier/buffer fluid around the lip seals.

Energized O-ring front lip tolerates lower speeds and higher shaft runout. This design increases sealing viability with certain emulsifiers and fluid viscosity transitioning such as CIP applications.

Sleeve: Sintered Silicon Carbide sleeve for durable wear and sealing surface. Inboard and outboard sleeve O-rings dampen vibration and aid in easy removal and repair.

Our technicians are familiar with the wide variety of seal families, materials and their applications. Through each stage of the repair / rebuilding process the seal is tested to exceed manufacturer’s specifications.

Power machines that have a rotating shaft, such as pumps and compressors, are generally known as “rotating machines.” Mechanical seals are a type of packing installed on the power transmitting shaft of a rotating machine. They are used in various applications ranging from automobiles, ships, rockets and industrial plant equipment, to residential devices.

Mechanical seals are intended to prevent the fluid (water or oil) used by a machine from leaking to the external environment (the atmosphere or a body of water). This role of mechanical seals contributes to the prevention of environmental contamination, energy saving through improved machine operating efficiency, and machine safety.

Shown below is a sectional view of a rotating machine that requires the installation of a mechanical seal. This machine has a large vessel and a rotating shaft at the center of the vessel (e.g., a mixer). The illustration shows the consequences of cases with and without a mechanical seal.

If the aim is solely to prevent leakage from the machine, it is effective to use a seal material known as gland packing on the shaft. However, a gland packing tightly wound around the shaft hinders the motion of the shaft, resulting in shaft wear and therefore requiring a lubricant during use.

To ensure this, each part is fabricated according to a precise design. Mechanical seals prevent leakage even with hazardous substances that are difficult to mechanically handle or under harsh conditions of high pressure and high rotating speed.

A mechanical seal is installed on the impeller rotating shaft. This prevents the liquid from leaking through the clearance between the pump body and the shaft.

The face materials where the stationary ring and the rotary ring rub against each other are the most important portions as a barrier to the fluid. If the clearance is too small, the friction increases, hindering the shaft motion or resulting in seal breakage. Conversely, if the clearance is too large, the liquid will leak. Consequently, it is necessary to control the clearance in the order of micrometers to prevent leakage, but at the same time ensuring lubrication by the fluid, thereby reducing the sliding torque and avoiding hindrance to the machines’ rotation.

The mechanical seal technology is a sum of mechanical engineering and physical property technology due to the above-mentioned functions and applications. More specifically, the core of the mechanical seal technology is the tribology (friction, wear and lubrication) technology used to control the surfaces where the stationary and rotary rings rub (slide) against each other.

Mechanical seals with improved functionality will not only prevent the liquid or gas handled by a machine from leaking to the outside, but also improve machine operating efficiency, thereby helping achieve energy saving and prevent environmental contamination. Moreover, in some cases, rotating machines handle media that, in the case of leakage, can lead to a dangerous accident. Therefore, mechanical seals are required to be highly reliable through manufacturing backed by solid engineering expertise.

These functions and roles will make mechanical seals increasingly important functional parts in the future. Their further technical innovation is anticipated. To positively respond to these expectations, Eagle Industry is working on technical research and development every day.

The mechanical seal technology was fundamentally established in the 1960s. Thereafter, it has been making significant progress by introducing various leading-edge technologies, and innovative mechanical seals created from the above advanced technology are continuously being put to practical use.

To meet the demands of the market sufficiently, an applicable range of the “pressure” and “rotation speed” of mechanical seals has been considerably extended since the beginning of the 2000s. This is due to advancing of the tribology technology such as to enhance a function of the sliding materials (e.g., composite material composition, coating technology) and/or a performance of the sliding surfaces based on the fluid lubrication theory (e.g., non-contact mechanical seal, surface textured mechanical seal). These advanced technologies are sustained by improvement in the element technology of numerical analysis, processing/production, physical property/composition analysis, measurement, verification test, and so on.