Mechanical Seal Failures
Mechanical Seal Failures
(OP)
I was fortunate to investigate two recent mechnaical seal fauilures and discovered that the failure was due to electrostatic discharge between the seal face. The discharge resulted in premature failure. It was discovered that the seal acted as a grounding device with the seal face being the high resistance spot. Interesting.





RE: Mechanical Seal Failures
Interesting but not very clear. Can you elaborate?
Regards,
Truth: Even the hardest of the problems will have atleast one simple solution. Mine may not be one.
RE: Mechanical Seal Failures
I have been into the same problems. At that time the pumps were operated through frequency converters. After some investigations I found out that this is quite common, and that special attention should be paid to the wiring and earthing. Motor manufacturers do normally have pretty much information in their written documentation.
Best regards
Björn Sollie
RE: Mechanical Seal Failures
sjerrier - was your pump driven from a motor with variable speed drive?
What are symptoms... noticeable arc marks?
RE: Mechanical Seal Failures
Regards.
sks2002