Oil seals are critical components in pump systems, designed to prevent lubricant leakage and ingress of contaminants. They operate on the principle of a rubber lip maintaining contact with the shaft, with dynamic sealing enhanced by spring tension. For static sealing applications, such as pump body end caps and flange connections, O-rings are typically employed.

Materials commonly used for oil seals include Nitrile Rubber (NBR) and Fluoroelastomer (FKM), selected based on their resistance to specific operational conditions. When selecting an oil seal, it is essential to evaluate factors such as operational environment, medium properties, temperature, and pressure to ensure optimal performance and longevity of the pump.

Proper installation and regular maintenance are crucial for maintaining the integrity and functionality of oil seals, thereby ensuring reliable pump operation and extended service life.