In most cases, Teflon mechanical seals do not require oil for lubrication because of their inherent low friction characteristics. Teflon’s smooth surface and non-stick properties allow it to slide against other surfaces with minimal resistance, reducing the need for additional lubrication. This is one of the primary reasons why Teflon is widely used in mechanical seals, as it can operate effectively without the need for constant oiling.
However, there are situations where the use of oil on Teflon mechanical seals may be beneficial or even necessary:
- High-speed applications: In high-speed rotating equipment, the addition of oil can help dissipate heat generated by friction, preventing premature wear and extending the seal’s lifespan.
- Dry running conditions: If the mechanical seal is expected to run dry for extended periods, a small amount of oil can help prevent damage to the Teflon surface and maintain its integrity.
- Specific operating environments: In certain harsh environments, such as those with abrasive particles or extreme temperatures, the use of oil can provide an extra layer of protection for the Teflon seal.