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A single spring type mechanical seal is a common type of mechanical seal used in pumps and other rotating equipment to prevent leakage of fluids. Here's a breakdown of its components and how it works:
Spring: As the name suggests, a single spring is the primary sealing element in this type of mechanical seal. The spring applies pressure to the sealing faces, ensuring that they remain in contact to prevent fluid from escaping.
Sealing Faces: The sealing faces are the surfaces where the mechanical seal creates a barrier to prevent fluid leakage. Typically, one face is fixed to the stationary part of the pump, while the other face is attached to the rotating shaft.
Rotating and Stationary Parts: Like all mechanical seals, the single spring type consists of both rotating and stationary parts. The stationary part is typically mounted on the pump housing, while the rotating part is attached to the shaft.
Seal Ring: The seal ring is the component that houses the sealing faces. It provides a secure enclosure for the sealing elements and helps maintain the alignment of the sealing faces during operation.
Drive Mechanism: In some designs, the spring is directly driven by the rotation of the shaft, while in others, a secondary drive mechanism may be used to provide additional force to the spring.
| Shaft Diameter | 14 to 120mm |
| Max. Pressure | upto 8 bars |
| Temperature Range | -23 to +180°C |
| Seal Ring Face | Carbon / SiC / T.C |
| Seat Face | Ceramic / SiC / T.C |
| Elastomer |
Viton / PTFE / TTV / EPDME / NBR
|
| MOC |
SS-316 / SS-304
|
Advantages of Single Spring Type Mechanical Seals:
Limitations:
Overall, single spring type mechanical seals offer a balance of simplicity, reliability, and cost-effectiveness for many pumping applications. Proper selection, installation, and maintenance are essential to ensure optimal performance and longevity.
