Single Cartridge Seals

Cartridge mechanical seal is assembled by the rotary ring, stationary ring, spring, secondary seal( o rings, PTFE), gland and other mechanical seal parts together as a collection, known as the cartridge seal, sometimes also called the cartridge mechanical seal.

Features ofSingle Cartridge Seals

  • faster and easier replacement of pump shaft seals
  • less downtime
  • reliable start-up after a sealing change

A singlecartridge type mechanical sealconsists of two very flat surfaces that are pressed together by a spring and slide against each other. The singlemechanical seal is a mechanical seal composed of 1 set of seal face. the sealing structure is simple, easy to manufacture and install features. Generally used for the medium with good lubricity and allows a slight leakage. Single cartridge seals are the most commonly used mechanical seal type. Single cartridge pump seals do not work well when the media is the toxic, flammable, explosive and strict requirement of leakage.

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.

Advantage ofSingle Cartridge Seals

  • ready-to-install: components include rotating components, bushingsandglands
  • gage bolts appliedforthe most gland box
  • easy to replace the packing or bearing
  • easy to install in uneasy install place
  • Used for longer time than non-cartridge mechanical seal

Disadvantages ofSingle Cartridge Seals

  • the structure is more complex, high requirements for manufacturing and processing of mechanical seal ;
  • installation and replacement is more complex, and requires workers to have a certain level of installation technology;
  • in case of accidental accidents, more difficult to deal with;
  • high investment than the non-cartridge mechanical seal.

MaterialofSingle Cartridge Seals

When a single cartridge seals used in the oil-filled motor, it is not only necessary to prevent the machine outside the impurities, sandandwater to enter, but also to prevent the leakage of oil within the machine ,So sealing requirements is higher, sealing ring material requirements need to be good, its sealing face material is made of tungsten carbide or silicon carbide. If it is installed on the shaft of the water-filled motor shaft, it only requires sand control. The sealing ring can be made of alumina ceramic, silicon nitride or other harder materials, so the cost is relatively low.

Recommended applications ofSingle Cartridge Seals

General industrial applications including chemical processing, foodandbeverage, petrochemical processing, pharmaceutical, wastewater and power generation.
Centrifugal pump, Chemical pump, Slurry pump, Mixer, Agitator, Circulation pump, Submersible electric pump, Reactor, Oil pump etc.

Difference betweenand non-cartridge mechanical seal

  • Cartridge mechanical seal has a sleeve and gland; non-cartridge seals only have the rotary and stationary ring.
  • The installation error rate of the Common non-cartridge mechanical sea is higher than the cartridge mechanical seal. Therefore, use cartridge shaft seal can greatly reduce the occurrence of mechanical seal failure.
  • Since the cartridge mechanical seal does not require any adjustment of the mechanical seal by the installer (such as spring, sealing surface, etc.), only the bolts need to be tightened, which greatly improves the reliability of the mechanical seal installation.

Send product request

To: Hangzhou Sealcon Fluid Machinery Co., Ltd
Your E-mail:
Message text:

Send to other suppliers

Other supplier products

SiC Mechanical Seal
SiC Mechanical Seal Silicon carbide (SiC) is also known as carborundum, which is made of quartz sand, petroleum coke (or coal coke), wood chips (which need to be added...
O.E.M MECHANICAL SEALS With mechanical seal factory, Sealcon is able to design and manufacture a wide range of OEM mechanical seals. Our aim is to improve product quality...
Pump Spare Parts
Pump Spare Parts Pump body:including suction chamber and the pressure chamber,water pump spare partsSuction chamber:its function is to allow the liquid to flow even...
METAL BELLOW MECHANICAL SEALS Metal Bellow seals are ideal for high temperature applications and harsh chemical services where elastomers cannot be used effectively. This seal t...
Carbon Seal
Carbon Seal Graphite is an isoform of element carbon. In 1971, the United States studied the successful flexible graphite sealing material, which solved the le...
All supplier products

Same products

STATIONARY SEATS Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd Rotary and stationary ringare the main components of a mechanical seal, which is a device that he...
SINGLE CARTRIDGE SEALS Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd Our single cartridge mechanical sealis manufactured by balanced seal-face technology, helping to ...
Seal Spare Parts Spring
Seal Spare Parts Spring Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd Introduction ofSeal Springs For a mechanical seal, the initial closing force ensures that the sea...
Seal Spare Parts Sleeve
Seal Spare Parts Sleeve Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd In most pumps, the portion of the shaft that is under the sealing arrangement is covered with a s...
Seal Spare Parts Sealing Rings
Seal Spare Parts Sealing Rings Seller: Hangzhou Sealcon Fluid Machinery Co., Ltd Brief Introduction of Sealing Rings The seal ring is a ring seal with the notch, it is placed in ...