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In pure water operation, silicon carbide cannot be used for the mechanical seal of horizontal end-suction pumps

2017-06-01View Original

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In the horizontal end-suction pumps currently in use, when the fluid being transported is pure water (with a conductivity of less than 0.5 μs/cm), it can cause corrosion on the surface of the silicon carbide mechanical seal. Has this issue occurred to anyone?
Reply #22017-06-01
Trace impurities in pure water can also cause corrosion on the surface of mechanical seals
Reply #32017-06-01
Silicon carbide is corrosion-resistant; has the original poster looked for reasons from other aspects?
Reply #42017-06-02
I guess the seal on your machine wasn’t damaged by water; it’s probably a problem with the installation
Reply #52017-06-02
It’s impossible; my devices use pure water, and the mechanical seals I use are made of silicon carbide. Moreover, acid is added to some of the water, yet this problem hasn’t occurred. Please post a picture so everyone can take a look
Reply #62017-06-02
The original poster can take some photos of the damaged mechanical seal and friction pair and post them, so that everyone can analyze them together
Reply #72018-03-19
I work in technical support, and I’ve never heard any customers mention that it might be caused by anhydrous dry film or wear of medium particles
Reply #82018-03-19
Hehe, that’s absolutely impossible~~~
Reply #92018-03-22
The silicon carbide you’re using is likely fake. ;P
Reply #102018-04-15
It shouldn’t be; silicon carbide functions normally under phosphoric acid conditions

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