1, the greater the amount of compression spring seal better. In actual fact, excessive compression spring, can lead to rapid wear of friction, transient burning; excessive compression of the spring lose the ability to adjust the ring face, resulting in seal failure.

2, ring seals more tightly as possible figure. In fact, ring seals tight harm than good. First, increasing the wear between the ring and sleeve, premature leakage; second axial adjustment ring increases, the resistance movement, while in the operating conditions change frequently unable to make timely adjustments; third is easy to damage the spring fatigue; four is the ring seal deformation, affecting the sealing effect.

3, the stationary ring seals more tightly as possible. Basically in a static stationary seal ring, the effect will be relatively tight seal better, but too tight is harmful. One is caused by stationary ring seal due to excessive deformation, affecting the sealing effect; the second is mostly static ring material with graphite, are generally more brittle, excessive stress can easily lead to fragmentation; third is to install, difficult to remove, easy to damage the stationary ring.

4, the impeller lock the tighter the better parent. Mechanical seal leakage, the leakage between the sleeve and the shaft (axis between the leak) is more common. Generally believed that the leak is between the impeller shaft lock locking the mother did not, in fact, lead to leakage between the axis of many factors such as the axis between the pad failure, migration, impurities within the shaft between the shaft and sleeve with a larger form at bit error, contact surface damage, shaft gap between the various components, shaft screw is too long and so will lead to leakage between shaft. Will only lead to over-tighten the lock master pad between the premature failure of shaft, opposite the lock locked modest mother of the axis between the compression pad always maintain a certain flexibility in the operation of the lock master lock automatically in due course, the axis is always in a good inter- sealed state.

5, the new better than the old. In contrast, the effect of using the new mechanical seal better than the old, but the new mechanical seal of quality or material selection is not the time, with the larger size of the error will affect the sealing effect; and permeability in the polymerization medium, the stationary ring without excessive wear, or not replaced at all. Because the stationary ring for a long time in the stationary ring seat in a stationary state in the polymer and impurities deposited as a whole, played a good seal.

6, the overhaul is better than not split well. Once the mechanical seal leakage will be eager to overhaul, in fact, sometimes sealed and not damaged, just adjust the appropriate adjustments to working conditions or can be sealed to eliminate leakage. In this way, to avoid waste and to verify their ability to judge the fault has accumulated experience in the maintenance overhaul to improve quality