single mechanical seal quotation

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.

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.

A single mechanical seal is a type of mechanical seal which consists of one primary seal and it seals from process to atmosphere.There is always some leakage either to atmosphere or into process depending on the process pressure.

-Found as Wet-running (liquid phase between sealing faces) on liquid pumps, Dry-running (gaseous phase between sealing faces) on blowers/compressors/mixers.

-Nearly always dry running contacting seal (mechanical seal face wear) for top mounted mixers. For side and bottom mounted (seal is submerged) a wet-running seal is normally specified.

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

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.

​​​​Chesterton"s cartridge mechanical seals are the product of choice w​​​​hen 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 witheasy installation. Chesterton"s cartridge seal offerings include exclusive, patented features such as self-centering lock rings and adjustable gland tabs.​

​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​The Chesterton 150 is a value leader in its class. It is the ideal single mechanical seal to reduce high maintenance costs and prevent wasteful leakage, shaft fretting damage, and inefficient downtime.

Designed for baseline applications and for upgrading packed or component sealed equipment, the 150 seal makes general industrial sealing simple, reliable, and affordable.

Cartridge seals are a modern alternative designed to eliminate common causes of component seal failure. Check pump unit for defects before installing a cartridge seal to avoid damage to seal parts.

Single cartridge or double cartridge seals are self-contained units comprised of a shaft sleeve, seal, and gland plate. Cartridge seals are fitted onto the pump shaft as a single unit with no further fitting or assembly required.

John Crane offers a wide range of standard cartridge seals that are versatile and easy to install, suit a wide range of duties and are commonly used in applications in the chemical, pulp & paper, power, food & beverage, mining, water/wastewater and general industries.

Designed to fit standard ANSI, DIN and ISO seal chambers they can also be used in a variety of rotary equipment. Our standard cartridge range provides you with reduced installation times, lower maintenance costs and optimal equipment performance.

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".

Split Mechanical Seals can be installed without disassembly of the equipment, simply attach two halves over the shaft and mount like any other cartridge seal. The only split seal that can be fully pressure tested at the factory before shipping can convert a packed pump to a sealed pump easily.

Mechanical seals are devices that seal machines between rotating parts (shafts) and stationary parts (pump housing) and are an integral part to the pump. Their main job is to prevent the pumped product from leaking into the environment and are manufactured as single or double seals. What"s the difference between the two?

A single mechanical seal consists of two very flat surfaces that are pressed together by a spring and slide against each other. Between these two surfaces is a fluid film generated by the pumped product. This fluid film prevents the mechanical seal from touching the stationary ring. An absence of this fluid film (dry running of the pump) results in frictional heat and ultimate destruction of the mechanical seal.

Mechanical seals tend to leak a vapor from the high pressure side to the low pressure side. This fluid lubricates the seal faces and absorbs the heat generated from the associated friction, which crosses the seal faces as a liquid and vaporizes into the atmosphere. So, it"s common practice to use a single mechanical seal if the pumped product poses little to no risk to the environment.

A double mechanical seal consists of two seals arranged in a series. The inboard, or “primary seal” keeps the product contained within the pump housing. The outboard, or “secondary seal” prevents the flush liquid from leaking into the atmosphere.

Two rotating seal rings are arranged facing away from each other. The lubricating film is generated by the barrier fluid. This arrangement is commonly found in the chemical industry. In case of leakage, the barrier liquid penetrates the product.

The spring loaded rotary seal faces are arranged face to face and slide from the opposite direction to one or two stationary seal parts. This is a popular choice for the food industry, particularly for products which tend to stick. In case of leakage, the barrier liquid penetrates the product. If the product is considered “hot”, the barrier liquid acts as a cooling agent for the mechanical seal.

Are you still using packing for your pumps? Read about the differences between packing and mechanical seals to see if switching to mechanical seals makes sense for your plant. A qualified engineer will help you decide which type of mechanical seal is best for your application.

These seals are independent of direction of rotation, pre assembled cartridge unit easy to install with different PCD’s pumps due to slots provided on gland plate and these seals can be offered in balanced and unbalanced configuration. A common seal head/mating ring set, utilized throughout all versions, is reversible to allow rotating. Seat/mating ring or rotating seal head operation, and is interchangeable with metal bellows seal heads. Seal has an optional quench gland with carbon ring throttle bushing.

"Single Cartridge Mechanical Seals" are used where there is corrosion and erosion in the seal media. This seal have good demand in sealing of rotation equipments. Single Cartridge seal are special purpose multi spring balance mechanical seals designees for use in abrasive or solid media.

NUTECH cartridge mechanical seals by Dixie Packing and Seal are designed to fit all ANSI pumps for ease of installation and are pressure tested prior to shipping. We can custom design any cartridge style seal to fit your most demanding applications. We use premium grade materials of construction throughout. All seals are made in the USA.

A single mechanical seal consists of stationary and rotating seal faces that are made from one hard and one softer material. A single mechanical seal offers considerable cost and energy savings when used instead of gland packing.

All our single mechanical seals incorporate hydraulically balanced seal-face technology for reduced power consumption, helping our customers reduce their energy usage whilst increasing reliability.

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.