high temperature mechanical seal quotation

The Flexaseal Style 63A/66A cartridge seal is specifically designed for ruggedness and durability to withstand higher temperature or dirty services. The Style 63A features a stationary bellows unit for superior performance in applications that require higher shaft runount or large assembly tolerances. The Style 66 is a rotating bellows unit for enhanced solids handling.

Grafoil packing throughout allows for operating temperatures up to 800F, while improving reliability by eliminating the dynamic secondary sealing element.

The Type 609HTC is a high-temperature bellows assembly intended for those demanding applications where a dependable, high-strength, rotating seal is preferred. Typical applications for these seals include hydrocarbons, aromatic fractionation products, crude oil fractionation products and heat transfer fluids, as well as chemicals, caustics, some acids, aqueous solutions and lubricating liquids. This seal utilizes "HTC" technology with an all-Inconel, corrosion-resistant welded metal bellows for reliably sealing fluids in harsh high-temperature, corrosive environments and, at the same time, provides superior face stability at elevated temperatures. This all-Inconel seal is ideally suited for applications that contain organic acids (naphthenic acid), and sulfur compounds that attack most other alloys at high temperatures. The Type 609HTC is utilized in our Type 2609HTC and Type 3609HTC API 682 Type C Arrangement 2 and 3 cartridge seals.

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​In applications where the process temperature exceeds elastomer capabilities, metal bellows mechanical seals with graphite secondary seals are a good sealing option. The 886HT Bellows Single Seal is designed for high-temperature services typically found in chemical and petrochemical processes. Graphite secondary seals replace O-Rings to achieve the higher temperature requirements.

​Advanced bellows design distributes pressure uniformly across the span of the bellows plate to reduce stress and minimize weld fatigue. Component design replaces most OEM seals.

Mechanical seals prevent leakage in equipment with moving parts such as mixers and pumps. It is devised to contain liquid or gas in applications where a rotating shaft goes through a stationary housing – or less commonly where the shaft is stationary, and the housing rotates around it

Flexaseal offers a wide variety of single cartridge mechanical seals, each designed as a reliable solution for the toughest applications. Our single cartridge seals are easy to install and minimize the number of moving parts that can lead to equipment failure. Specially designed single cartridge seals are also available for highly corrosive or high-temperature environments. Cost-effective upgrades are available when circulation, vent, & drain glands are required.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

The Style 57 design serves to keep the sealing faces in contact and positively transmits the drive evenly 360° around the full circumference of the rotary face. This is accomplished by the special spring design, which provides an interference fit. The compression spring is wound either right or left hand depending on shaft rotation.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Stationary design accommodates higher shaft-to-stuffing box misalignment. The stationary bellows design only flexes once during installation unlike a rotating design which flexes on every revolution. This reduces face movement and increases seal life.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

These two single cartridge seals are engineered for the most demanding corrosive applications. By minimizing the number of troublesome O-rings and eliminating any media exposure to the sleeves and glands, we have produced two very cost effective solutions to industries’ toughest applications.

In highly corrosive conditions that require expensive upgrades to higher alloy metals like duplex stainless steel, Alloy 20, Hastelloy® C276, the PH seals are an ideal economical solution. Only the wetted parts need to be constructed of these alloys while the larger metal parts such as the gland and sleeve can be 316 stainless steel since they are located out of the product

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

API compliant with piloted gland to positively center seal assembly and metal-to-metal confined gland gasket which prevents blow out or extrusion of the gland packing

Multi-point injection feature available which ensures maximum uniformity of cooling around the entire circumference of the sealing faces, thus eliminating face distortion due to uneven cooling. Ideal for boiler feed and light flashing hydrocarbon services.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Conventional pump stuffing boxes were originally designed to accommodate packing materials. Over the years mechanical seals edged out packing as a preferred sealing method, however stuffing boxes essentially remained the same. This situation posed complications for the effective operation of mechanical seals including installation issues, potential damage from abrasive product, and poor dispersion of seal-generated heat.

The ANSI Standard ASME B73.1 Specifications for Horizontal End Suction Centrifugal Pumps for Chemical Process includes specifications to improve the reliability and safety of the B73.1 pump design. One major specification focuses on cylindrical (big bore) and self-venting (tapered bore) seal chambers. Both of these seal chamber designs address the issues that plagued conventional pump chambers by providing additional radial clearance for mechanical seal operation and for increased liquid circulation around the seal, enabling the seal to run cooler and longer.

Only two (2) static elastomers – eliminate seal failures caused by dynamic O-ring “hang up” and offers cost savings when upgrading to Perfluorelastomers

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Note: Max Temperature / pressure / speed indicate operating extremes independently and do not imply the seal will function at these extremes at the same time.

Extreme temperatures characterize many refinery processes. Gasoline boiling between 90° and 220° F seems low when compared to kerosene at 315° to 450° F and gas oil at 450° at 800° F. Asset reliability is critical to running these high-temperature processes round the clock. You can reasonably make the case that every major asset and component is critical to an efficient refining process.

But here I want to emphasize the importance of pumps, mechanical seals, and seal support systems. Without pumps, there is no process. Without the proper seal support systems, high temperatures in seal chambers may damage mechanical seals and lead to pump leakage.

While leakage can cause small problems or big ones, you always need to have the risk of sanctions in your mind, especially in high regulation states like California. And with Bay Area refinery budgets as lean as they are currently, it makes sense to choose the right systems from the start to avoid something costly going wrong in the future.

Several factors contribute to high temperatures in the seal chamber, which in turn leads to mechanical seal degradation. A mechanical seal and seal support system may have been perfectly matched to the initial process, working reliably for years. However, a change to a higher-temperature process can exceed the capability of the mechanical seal and capacity of the seal support system.

At higher temperatures, elastomeric components in the mechanical seal may begin to deteriorate. For example, beyond 300° Fahrenheit (150° C) ethylene propylene components eventually degrade and leak. Some hydrocarbons coke at higher temperatures and impede the free movement of mechanical seal components. And process fluids at high temperatures are prone to vaporize, or flash, across the seal faces, causing fugitive emissions.

With increased temperatures of process fluids, the seal support system may no longer be able to maintain the barrier or buffer fluid temperature or flow rate required to maintain the integrity of a dual seal arrangement. When mechanical seals and seal support systems can no longer ensure pump reliability it’s time to select seals, support systems, and components better suited for the job.

If a change to a higher process temperature is causing unanticipated leakage, consult with your preferred mechanical seal vendor. The materials alone can present an overwhelming number of options as seal technology and design continue to evolve. There are now more choices than ever, including:

⇒ Seal faces—carbon, stainless, ceramic, tungsten, and variants incorporating silicon, graphite, or nickel—engineered for resilience and compatibility with process fluids

The benefit of these choices is the ability to match mechanical seals to the specific needs of the process, maximizing seal performance and reliability.

The mechanical seal requirements of high-temperature hydrocarbon processes are best met with dual/ between seal arrangements. A dual seal support system provides fluid between two seals, buffer fluid at a lower pressure than the process fluid, and barrier fluid at a higher pressure than process fluid.

In contrast to a single mechanical seal arrangement where seal degradation or failure results in fugitive emissions or outright leakage, the two seal arrangement provides a more reliable means of preventing high-temperature hydrocarbons from leaking. Here too, rotating equipment and reliability engineers have a number of dual seal design options to choose from, including:

Face-to-face configurations are used in space-constrained areas that cannot accommodate back-to-back or tandem arrangements. Seals share a common stationary component which, if compromised, leads to leakage. You can select from buffer or barrier fluid options.

Gradual or sudden changes in barrier or buffer fluid pressure provide evidence of problems with seals. An experienced mechanical seal vendor can help you navigate the options available to ensure mechanical seals and their components meet each of your specific needs.

Equally important to the reliable functioning of mechanical seals in high-temperature processes is the selection of seal support systems. The mechanical seal you choose will guide the seal support system plan that best meets your needs.

Seal support systems for dual seals are divided into two categories: buffer and barrier. While that seems to simplify the selection, there are a variety of options for each category. To give you an idea of what’s available, I’ve listed a few of the mechanical seal support system options below.

Circulates pressurized barrier fluid from a reservoir to the dual seals. Use plant nitrogen, bladder accumulator, or piston accumulator to supply seal pot pressure. Any leakage across the process side seal is barrier fluid that lubricates seal faces and migrates into process fluid.

Provides clean, dry pressurized barrier gas (typically nitrogen) to the dual seals from an external source. Any leakage past the atmospheric seal is pure nitrogen.

For each of these plans, there are options to fine-tune the seal support system and provide a greater level of reliability for mechanical seals operating in high-temperature environments. Among the many options you may want to include:

An experienced seal support vendor can save you time and money, helping you select and configure the seal support systems with the right components for each of your high-temperature hydrocarbon pumping needs.

Swagelok has been meeting the mechanical seal support system needs of Northern California refineries for more than 50 years. When you work with Swagelok, you have the benefit of a local vendor with facilities in Concord, Fremont, and Santa Clara. Being local translates into on-site support, field verification of your requirements, and rapid delivery of seal support system assemblies, components, and parts.

To find out more about howSwagelok Northern California can help you address the challenges of maintaining the proper environment for mechanical seals in high-temperature serviceContact our team today by calling 510-933-6200.

Paul holds a B.S. in Mechanical Engineering from North Dakota State University. Before joining Swagelok Northern California, he was the West Coast Regional Sales Manager for an organization involved in pneumatic and hydraulic applications where he supervised product distribution throughout the western United States, Canada, and Mexico. While in this role, he was able to help provide technical and application-specific expertise to customers and distribution to drive specifications.

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.

Specially designed for cryogenic temperatures and high temperatures, mechanical seals with metal bellows are used when mechanical seals with elastomeric components are not adaptable to extreme temperatures. Our proprietary metal bellows allow us to design and recommend the most efficient solutions to meet your specific application parameters and operation requirements.

A mechanical seal is a device used to contain fluid within a centrifugal pump or other vessel where a rotating shaft passes through a stationary housing. Mechanical seals for centrifugal pumps feature two sealing faces: a rotating or dynamic face which rotates with the shaft, and a static face, or seat, which remains stationary. The rotating face is made from a harder material than the static face, and as it spins, it wears a groove into the seat, which creates a liquid-tight seal.

Because the two faces of a mechanical seal are constantly rotating against one another, a significant amount of heat is generated. To keep the faces cool and lubricated, mechanical seals incorporate external flushing systems that pump coolant into the seal. This coolant is introduced at a higher pressure than the media being pumped to create positive pressure and keep the media from infiltrating the seal faces.

Delmar Company offers high quality, high performance mechanical seals for centrifugal pumps. We team with Flex-A-Seal, Vulcan, and other leading manufacturers to provide cartridge mechanical seals and single spring mechanical seals to give our customers effective sealing solutions for all pumping applications. Through these partnerships, we can provide mechanical seals that are interchangeable with cartridge seals or single spring seals from John Crane, U.S. Seal, Pac-Seal, Flygt, Flowserve, AES, Sepco, and other manufacturers.

More expensive than single spring seals but far easier to install, cartridge mechanical seals are self-contained devices with all parts and components in a single unit. Available in multiple configurations and with a variety of sealing face material combinations and o-ring options.

While installation is a much more involved process for single-spring mechanical seals, they are also significantly less expensive than cartridge seals. We offer single-spring seals for clockwise and counterclockwise rotating centrifugal pumps in a wide range of sizes and with numerous sealing face and o-ring material options.

Delmar Company offers full-service mechanical seal repair to extend the life of your cartridge seals at a fraction of the cost of replacement. Your damaged cartridge mechanical seals will be repaired to original OEM specifications.

Most customers already know the type, size, and/or configuration of mechanical seal their centrifugal pump requires. However, if you’re not sure what you need, Delmar Company can help you find the right option for your pump. To ensure that you receive the correct mechanical seal, we use a series of questions we call STAMPS. Please keep the following questions in mind when specifying the mechanical seal you need:

If you’re looking for a high quality, high-performance cartridge mechanical seal or single-spring mechanical seal for your centrifugal pump or mixer, look no further than Delmar Company. Request a quote or contact us today.

Non-contacting seals are utilized in conditions where zero power dissipation is required and controlled leakage of gas is acceptable. Applications include, high pressure compressors, turbo compressors, aircraft turbine engines, oil free centrifugal compressors, dry screw vacuum pumps, oil free screw compressors, positive displacement blowers, etc. Ergoseal"s windback, piston ring, circumferential, and multiple carbon split and solid iterations have proved worthy investments for our OEM partners time and time again.

Our specialization in offering a distinct collection of Metal Bellow Double Cartridge Type Mechanical Seal, We provide our range in readymade unit, which is easy for installation with saving of time. This Cartridge type Mechanical Seal are ready to install on any type of high temperature clear & hot application. Such seal do not require adjustment in fitting due to factory pre-assembly hence avoid installation problem. Cartridge mechanical seals are the product of choice when reliability is a requirement. These products are proven, rugged performers in a wide range of sealing applications across industries. Cartridge seals are ideal for plant-wide standardization and save time with quick & easy installation. These are available in double configuration cartridge assembly too. It finds great usage in hydrocarbon, pulp paper, steel, mine & power industries. We have very long experience in reconditioning of metal bellow mechanical seals.

ApplicationPetrochemical Industries, Oil & Gas Industries, Chemicals Industries, Refining Technology, Power Plants, LPG Plants, Hazardous Liquid, Thermic Fluid, Fatty Acid, High Temperature, Hydrocarbons, Biochemistry & Process Pump Etc.

We recognize and understand the vital role of high temperature mechanical seals in their application. With purposes including securely fastening components within systems, and contaminants prevention such as gases and liquids from navigating through enclosed and sealed areas. That is why we offer wholesale high temperature mechanical seals in different variations and diversities to ensure the integrity and efficiency of systems they will be applied to will function successfully and optimally. The different seals" types available include static that does not move along with other seals and dynamic seals that move collaboratively.

Depending on the industry and selected purpose, we consider high temperature mechanical seals requirements. Requirements are like pressure, that is pressure changes, to ensure they can withstand and do not deform by the sealed fluid, the load and how it can withstand deflection, dynamics such as the alignment and vibration, and temperature covering the environmental conditions and the heating arising from the friction of the seal operation and fluid movement.

The seals are either bolts, nuts, or washers. Seal bots are commonly used because of their benefits in being reusable, preventing fluids and contaminants from escaping even under high pressure. Nuts are essential on temperature withstanding and compatibility with screws, studs, and bolts, in addition to, easy installation. Moreover, washers can withstand high pressures and are compatible with other seals.

Mechanical seals prevent leakage in equipment with moving parts such as mixers and pumps. It is devised to contain liquid or gas in applications where a rotating shaft goes through a stationary housing or less commonly where the shaft is stationary, and the housing rotates around it.

Rotating equipment often requiresa dynamic mechanical seal to create a seal between a rotating shaft and a stationary body and prevent the escape of process fluid(s) including liquid and/or gas.

They can also be used in mixer seals to prevent fugitive ambient particulates from entering a contained vessel being being mixed such as a pharmaceutical reaction vessel.

A method of creating an axial force on the Rotor and Stator pair creating the dynamic seal. This can be part of the Stator in the case of some Lip Seals, a simple spring in low duty applications, bellows springs for corrosive and high duty applications, etc. The pressure of the fluid being sealed can also be used to augment the previously mentioned approaches through the design of the Rotor which is often a Carbon/Graphite material.

Materials selection.For stationary components this is usually dictated by cost and the seal environment in terms of temperature and fluid chemistry which could be acidic, basic, oxidative, corrosive, etc..

Although cost is a factor in selecting the Rotor and Stator materials, the demands of the application are often a greater concern including temperature, fluid chemistry, presence of particulates, pressure, expected vibration which can be caused by a hydraulic hammer or cavitation, dry running survivability and resistance to thermal shock due to temporary and untended fluid flow interruption as a result of valve or operator failure, etc..

Low duty seal requirements refer to low fluid pressure (generally < 100 psig), low fluid temperature (generally < 200 F), the absence of corrosive chemistry and abrasives, higher permissible leakage rates, etc. These factors allow for a simpler seal design and selection of lower cost components both of which permit simpler assembly along with installation requirements.

These seals utilize an expensive compressible material (such as leather, felt, and polymeric materials) which fills the gap between the shaft and a surface at the lip of the pump and a mechanical component applies an axial force to partially compact the sealing material and forcing it to expand against the shaft and pump lip.

Typically, such seals are used in older equipment, less developed nations, or low rpm and simple sealing applications. Again, due to such end user expectations as life, low maintenance, and low leakage rates the use of these seal types is diminishing.

These are inexpensive but low duty and used in commercial applications which operate at low pressures, low shaft rotational speeds, and higher allowance for leakage rate. The spring force for the seal is radial and can be generated by the lip seal itself due to deflection by being forced into place or a circumferential spring.

Instead of relying on a carbon bonded component to form the seal these solutions use a resin bonded carbon graphite material which limits it sealed pressure, shaft rotation speed, operating temperature, chemical resistance, design due to its lower Elastic Modulus, resistance to abrasive particles, and wear rate.

These seals also use lower cost mating faces such as stainless steel or alumina. Such application include dishwashers, low duty pumps, etc. However, in many cases these applications have evolved to utilize higher duty materials as a result of user expectations for seal life and lower leakage rates.

Both the rotor and stator have a surface which has been polished to typically 2 to 3 Light Bands flat (0.6 to 0.9 µm). These two faces are mated and rotate relative to each other creating the dynamic mechanical seal.

Carbon graphite materials are widely used for these dynamic mechanical seals and are compatible with all mating faces including metals such as stainless steel, tungsten carbide, alumina, reaction bonded silicon carbide and self-sintered silicon carbide.

Because the application can be complex it is critical to obtain as many details as possible (pressure, velocity, fluid, temperature, free abrasive, mating face, etc.) to enable the best carbon graphite grade recommendation.

Because of the variety of pump and shaft sizes, operating environments, working fluids, pressure, temperature, and installation constraints there is a plethora of different perturbations of the afore mentioned dynamic mechanical seals to address these challenges.

Split Seals is a subset of dynamic mechanical seals where the seal consists of circumferential segments that are assembled around a shaft in the field which is required by difficulty and cost of removing the shaft to put a conventional seal in place.

As you can imagine a liquid split seal is more complicated and involves far more components but are an evolution of the dynamic mechanical seal discussed above.

Gas split seals are simpler in design using less components and almost exclusively utilize a carbon graphite material which is generally stationary and rubs against the shaft. It is critical that the material is self-lubricating and not gall, erode, or gouge the shaft.

Such seals are commonly used in gas turbine and compressor applications serving the industrial, energy generation, and aerospace markets. Shown below are a variety of Halo™ split seal carbon graphite components produced from proprietary materials by St. Marys Carbon.

Labyrinth Seals are actually two seals in one, both of which are satisfied by a carbon graphite ring. This ring has grooves machined on either the ID or OD (depending on the OEM’s design) which when rotation occurs air is channeled in the grooves and present a barrier to axial gas movement, this is the first and primary sealing mechanism.

Reciprocating pistons are commonly used to compress gas. Pistons require thin cross section rings which ride in piston grooves and are oversized and compressed when assembled so they will spring outward and seal against the cylinder in which the piston is reciprocating.

In conventional combustion engine applications metal piston rings are used. However, for high temperature applications that also require a self-lubricating piston ring carbon graphite is the material of choice.

A rotary joint typically consists of a metal convex spherical fitting which will mechanically seal against a concave spherical fitting typically produced from a carbon graphite material. These materials are self-lubricating and will not gall or scrape the more expensive and more difficult to replace metal face. The carbon fits into a metal holder and so is relatively easily replace when disassembled which hopefully is only performed during preventative maintenance scheduled shut-downs.