Mechanical seal selection for condensate pumps
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There is a condensate pump. The machine seal is a warm ball. The temperature of the condensate is about 120. After the current machine seal is used for a period of time, the rubber of the moving ring will crack from the middle. Does anyone have a replacement machine seal?
Is it better to use PTFE at 120 degrees?
120 degree water without cooling?
Explain the working conditions to the mechanical seal manufacturer and ask him to upgrade the materials.
This water temperature is too high to directly flush the mechanical seal. How about adding a coil or introducing an external flushing water source?
You can try using fluorine rubber or silicone O-rings.
It is the simplest centrifugal pump, which uses an impeller to press the ring and does not need to be adjusted.
Can the mechanical seal be used? 120 degree water doesn’t even cool down
V-rings are difficult to install and may leak easily. O-rings are made of high-temperature fluorine rubber.
As for the 120° water pump, I have a question, what is the matching flushing system? The minimum requirement of API 682 is 11+23 to ensure that the water temperature of the flushing machine seal is lower than 80°C. If you are only interested in the material of the O-ring, you can check API 682 Table B.4 Material Applicable Table: Because the poster operates the water temperature at 120°C and did not mention the flushing system. If FKM is not easy to use, try upgrading to FFKM.