Many machinery will have fluorine rubber seals, so what are the factors that affect the use of fluorine rubber seals?

Insufficient machining accuracy: There are many reasons for insufficient machining accuracy, such as the insufficient machining accuracy of the fluorine rubber sealing ring itself. This reason is easy to attract people's attention and easy to find. But sometimes the machining precision of mechanical parts is not enough. This reason is not easy to attract people's attention. For example: the increase precision of the pump shaft, shaft sleeve, pump body, and sealed cavity is not enough. The existence of these reasons is very unfavorable to the sealing effect of the fluorine rubber sealing ring.

Vibration is too large: the vibration of the fluorine rubber sealing ring is too large, which will eventually lead to the loss of the sealing effect. However, the reason for the large vibration of the fluorine rubber seal is often not the cause of the fluorine rubber seal itself. Some other parts are the source of vibration, such as unreasonable machine design, processing reasons, insufficient bearing accuracy, and large radial force. And so on.
The sealing surface of the fluorine rubber sealing ring needs to have a certain specific pressure, so as to have a sealing effect, which requires the spring of the fluorine rubber sealing ring to have a certain amount of compression, giving a thrust to the end surface of the fluorine rubber sealing ring, and rotating it to seal The surface produces the specific pressure required for sealing.

There is no auxiliary flushing system or the auxiliary flushing system setting is unreasonable: the auxiliary flushing system of the fluorine rubber sealing ring is very important. The auxiliary flushing system of the fluorine rubber seal ring can effectively protect the sealing surface, cooling, lubricating, and washing away debris.

Sometimes the designer does not configure the auxiliary flushing system reasonably, and the sealing effect cannot be achieved; sometimes although the designer designs the auxiliary system, but due to impurities in the flushing fluid, the flow and pressure of the flushing fluid are not enough, and the design of the flushing port position is unreasonable. , Also can not achieve the sealing effect.