Mechanical Seals

For a very long time, packing materials are often used to contain leaks. They are made using soft, flexible materials that are versatile enough to be used in any application. Traditionally, gland packing is the most popular method of packing used in sealing. It has been proven to be effective, cost efficient and is quite versatile making it the reliable choice for many industrial applications. These thick synthetic materials are physically stuffed to fill the gap between the mechanism to avoid leaks but because of their design, they are not ideal in areas where contaminated gas or other vapor substances are supposed to be contained.

Evolution of Mechanical Seals

With time, industries realized the importance of mechanical seals as they are highly efficient and never allows leakage unlike gland packing that doesn't get the job done in specific scenarios. Right from its first design, it has undergone so many changes until the modern version of the seal came into being. The one being used now has three different sealing points, where an o-ring or gasket clamp is used to tightly connect the pump housing with the stationary part.
A significant advantage of using mechanical seals is that they are made using simple architecture that are designed for redundant usage. Industries are always filled to the brim with piled up work and machineries are used throughout the week without any break. As they are simple gaskets or o-rings made using highly durable steel or other suggested materials, they can withstand the wear and tear of everyday usage.

Mechanical Seals

Setup and Components Used

The setup comprises of a rotary seal face and a stationary steel face. While the first one moves along with the motor at the same speed so as to avoid friction the other one remains at the same spot. It also includes a tension assembly which keeps the rotatory face in place when not in use. The setup ensures that no leakage takes place even when the manufacturing unit is not in use. It's a mandatory requirement for any plant because there will always be a time when they have to keep those coolants or gaseous materials stored in the compartment for long periods of time. Any leak could lead to accidents or loss of quality in the final product. The mechanical seals used and the way they are installed even with moving parts ensure the objective is efficiently solved. While many of these components still use the concept of packing, mechanical seals are very efficient when compared to more conventional choices because they are proven to be rugged even after many years of usage. The conventional industries can usually rely on the average model and it will protect their factory from any kind of safety issues for years to come. However, industries have been constantly evolving every year and newer applications may need custom made seals to solve specific purposes.

Advantages of Using Mechanical Seals

The advantages are fairly transparent as any industrial expert knows that these seals ensure leakage never occurs. Having a leak free industrial setup goes a long way as it ensures a safer work environment for employees in the venue. Liquid leaks cause wet floors, reduced number of bearing failures and gas leakage that could cause contamination in the environment are completely eradicated with the right usage of mechanical seals.

A good quality product made of robust materials and comes from a reputed brand is a long-term investment for the industry. Mechanical seals are of different types and there is the option to talk to an expert seller to identify the type of the product the company needs to operate efficiently.

PTFE Seals

PTFE Seals

Split Seals

Split Seals

Mixer Seals

Mixer Seals

Tandem Seals

Tandem Seals

Inboard Seals

Inboard Seals

In-Line Seals

In-Line Seals

In practical use, the basic rotating face mechanical seal principle is adaptable to serve a tremendous number of sealing needs: standard mechanical seals can suit most requirements-including temperatures to 500 degrees F and shaft speeds to 3600 RPM through the choice of secondary seal and the combination of seal and seat face materials which are offered. Seals can be ordered in balanced configurations to seal pressures above 200 psi, or used in a multiple for extremely high pressures or especially severe fluid services....Special mechanical seals can be furnished to meet the most demanding of industrial applications considering pressure, temperature, speed or fluid.

Features of Mechanical Seals:

Advanced and Special Features

  • Invisible leakage
  • Less friction/power loss
  • No to little wear on the shafts or sleeves
  • Flexibility - to accommodate shaft deflections and "End Play"
  • No period maintenance
  • Long Life
Cartridge Seals

Cartridge Seals

Cartridge Seals

Cartridge Seals are pre-assembled package of seal components making installation much easier with fewer points for potential installation errors to occur.

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Seal Pots

Seal Pots

Seal Pots

Mechanical seal pumbing plans you will know in some cases you will need a seal pot to supply clean lubricating fluid to your seal

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Why We Choose Us

Single Spring Mechanical Seals

Utilize a single spring coiled in a right of left hand design to accommodate left and right hand turning pumps. They have the flexibility to accommodate misalignment, shaft deflection, and break away shock loading. It resists clogging in extremely viscous fluids.

All mechanical seals are constructed of three basic sets of parts:

  • 1) A set of primary seal faces: one that rotates and one that remains stationary.
  • 2) A set of secondary seals known as shaft packings and insert mountings, such as o-rings, rubber boots, PTFE or Grafoil wedges, or V-Rings.
  • 3) Mechanical Seals have hardware including gland rings, collars, compression rings, pins, springs, retaining rings and bellows.
  • Cartridge Mechanical Seals

    Are the easiest seal for a mechanic to install. Only being required to slide onto the pump shaft and bolt to the pump gland, the cartridge seal cannot be miss installed.
    Cartridge seals must fit the stuffing box there is a form on www.americansealandpacking.com under mechanical seals with this and other information on it to help the customer make sure the seal fits there pump.
    Installation of single spring, metal bellows or multiple spring seals require much more effort to be sure of an effective long lasting seal. Ask your American Seal & Packing sales representative for installation directions.
    Inflatable seal Seals that inflate and deflate in three basic directions of operation: the axial direction, the radial-in direction, and the radial-out direction. Each of these inflation directions has their own set of performance parameters for measurements such as the height of inflation and the center-line bend radius that the seal can negotiate.

    Mechanical Seals can be classified by Arrangement
    Mechanical Seals can be classified by Arrangement

    A mechanical seal works though the use of two very flat (generally within 3 light bands flat) lapped faces which make it difficult for leakage to occur (beyond a vapor). As mentioned above one face is stationary and one rotates with the shaft. One of the two faces is usually a non-galling material such as carbon-graphite. The other will be a harder material providing dissimilar materials making contact and allowing one to be a sacrificial. The softer mechanical seal face usually has the smaller mating surface and is commonly called the "wear nose" of the mechanical Seal.

    Mechanical Seals can be classified by Design
    Mechanical Seals can be classified by Design

    The Easiest seal to install as a replacement for pump packing is a cartridge type mechanical seal:
    The Beauty of cartridge seals are they are self-contained. Holding all the elements of a mechanical seal set:
    *Rotating Face Seal
    *Stationary Seal face or faces
    *Shaft sleeve
    *Gland

    Recent News

    25

    July
    Cartridge Seals - in stock

    We have placed into inventory ANSI standard cartridge seals which we offer at exceptional prices.

    30

    July
    Metal Bellows Seals

    We have both General Service Metal Bellows seals with AM350 bellows and Stainless End Fittings.

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