A pump seal is one of the smallest but most significant components of a pump system. It plays a vital role in the proper functioning of the entire pump by keeping the coolant away from the bearing system. Its failure can cause damage to the pump; therefore, it is important to understand the major causes so as to avoid them.

Exposure to high temperatures

High temperatures usually result from an overheated pump which is working beyond optimum. Once the pump overheats, the seal is exposed to high temperatures as well. If this goes on for some time, the seal will wear out and fail to function altogether. A deteriorated seal will allow the coolant and other abrasive contaminants into the bearing system. Once this happens, the bearing will also fail and cause severe damage such as a broken bearing shaft.

Excessive vibration of the pump

Various factors such as improper alignment and pump imbalance can cause excessive vibration of a pump. It can cause damage to vital components or shorten their usable life. Excessive vibration causes wearing out of the pump seal over time. Once it's worn out, the seal will not be able to operate optimally, and this could lead to failure of the entire system. Regular maintenance is necessary to identify and correct impending mechanical problems.

Faulty operation of the pump

Pumps, especially mechanical ones, have startup procedures that should be followed every time the pump is started. If it's started improperly, the motor can trip causing the shaft to twist. All this may result in failure of internal components such as the seal. You should always refer to the pump manual if unsure of how to start it. If you need to replace your seals, ensure that you are competent or hire a professional to do it for you.

Exposure to harsh chemicals

Chemicals are known to corrode materials with which they come into contact. When exposed to chemicals, pump seals may gradually wear out. If the chemical exposure continues for a prolonged period, the usable life of the seals shortens, and they may fail entirely. You should ensure that the pump and seal aren't exposed to any harmful chemicals.

Once you understand the causes of seal failure, you can easily protect your pump seal from them. However, if your seal fails, you should have it replaced, so that other components of the pump aren't damaged as well.

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