Types of Mechanical Seals for Centrifugal Pumps [Complete Guide] :- DRP mechanical seal:
This mechanical seal is a cartridge type. An end-face mechanical seal is a gadget utilized on a turning shaft to keep liquids in and foreign substances out. It forestalls the liquid traveled through a resource, most frequently a divergent siphon, from spilling. These seals are situated in the resource’s stuffing box or seal chamber. This is the region of the siphon where the siphon shaft interfaces with the drive.
A mechanical seal is a device used to join systems or mechanisms together by preventing leakage, containing pressure, or excluding contamination where a rotating shaft passes through a stationary housing, such as in a centrifugal pump. These seals are critical in ensuring that the pumped fluid does not leak out along the shaft, which could lead to equipment failure, safety hazards, or environmental contamination.
With the exception of air seals, which will be addressed later, most mechanical seals have two flat faces positioned perpendicular to the shaft. The seal chamber housing has one of the faces mounted stationary. The principal seal is provided by the other face, which rotates with the shaft. The contact between the seal face materials is maintained by axial mechanical force and fluid pressure. This contact keeps the fluid in the pump and avoids leaks.
| Seals Size | 15mm to 100mm |
|---|---|
| Pressure | 12kg/Cm2 |
| Speed | 10m/s |
| Temperature | 100oc to 250oc |
| Rotary Face | carbon Silicon, TC |
|---|---|
| Stationary Seats | Silicon, TC, SS, Ceramic |
Viton, NBR, EPDM, Silicon, PTFE
SS304, SS316, SS3165
| Seals Size | 12mm to 80mm |
|---|---|
| Pressure | 10kg/Cm2 |
| Speed | 10m/s |
| Temperature | 250oc to 200oc |
| Rotary Face | Carbon Silicon, TC |
|---|---|
| Stationary Seats | Silicon, TC, SS, Ceramic |
Viton, NBR, EPDM, Silicon, PTFE
SS304, SS316, SS3165
Non-crystal acid, akali salt, lower, stickiness oil:
Polymer, hydrogen carbide, water of lower hanged
| Seals Size | 20.mm,TO 120mm |
|---|---|
| Pressure | 8Kg/cm2 |
| Speed | 12m/s |
| Temperature | -20oc to 200oc |
| Rotary Face | GFT |
|---|---|
| Stationary Seats | Silicon, TC, SS , Ceramic |
PTFE, GFt
SS304, SS316, SS3165
Acids, Alkalis, Strong Oxidizing
| Seals Size | 12.mm,16mm,22mm & 28mm |
|---|---|
| Pressure | 20Kg/cm2 |
| Speed | 15m/s |
| Temperature | -20oc to 200oc |
| Rotary Face | carbon Silicon , TC |
|---|---|
| Stationary Seats | Silicon, TC, SS , Ceramic |
VITON, NBR, EPDM, SILICON, PTFE
SS304, SS316, SS3165
Water of lower hanged, coolant pump
| Seals Size | 20mm TO 150mm |
|---|---|
| Pressure | 10Kg/cm2 |
| Speed | 12m/s |
| Temperature | 200oc to 250oc |
| Rotary Face | carbon Silicon , TC |
|---|---|
| Stationary Seats | Silicon, TC, SS , Ceramic |
VITON, NBR, EPDM, SILICON, PTFE
SS304, SS316, SS3165
Non-crystal acid, alkali salt, lower, stickiness oil:
Polymer, hydrogen carbide, water of lower hanged turbines, sea water and the outer liquid
Rubber Bellow Mechanical Seal [Type (MG1 to MG 13 Type)] is most common and low priced used for the simple and non-critical application. It's having single spring for non-clogging, self-cleaning operation and bellows for self-alignment in case of axial and radial end play & run out in the shaft. There are a lot of designs and shapes available in this series to accommodation in almost all type of stuffing box. This series is available in Metric as well as British Standard sizes. It finds great usage in the light application like Water, Milk, Juice, Coolants & soft slurry etc. Elastomeric Bellow Mechanical Seals can be designed as per dimension of the stuffing box. Length and Diameter can be adjusted to fit any type cavity therefore it finds usage in the wide variety of Equipment. We can develop these seals in custom made designs also.
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