Abstract

Due to increasingly stringent environmental regulations, leakage-free shaft seals with minimal friction are growing ever more important. The trend toward higher operating speed (e.g., in the field of e-mobility) additionally aggravates the sealing task. Reliable, leakage-free shaft seals—such as gas-lubricated mechanical seals—are difficult to manufacture and thus expensive. Therefore, there is still significant interest in an efficient and easy-to-manufacture shaft seal design. This study discusses the development of sleeve-type lip seals made of fluoroelastomer with an innovative, sickle-shaped back-structure design. The novel lip seals are capable of operating at near-zero friction. Compared to state-of-the-art, gas-lubricated mechanical seals, near-frictionless sliding on an air film is achieved with a simple, robust, and easy-to-manufacture sealing-lip design.

摘要

由于日益严格的环境法规，摩擦最小的无泄漏轴密封变得越来越重要。更高运行速度的趋势（例如，在电动汽车领域）进一步加重了密封任务。可靠、无泄漏的轴封（例如气体润滑机械密封）难以制造，因此价格昂贵。因此，人们仍然对高效且易于制造的轴封设计感兴趣。本研究讨论了由具有创新的镰刀形背部结构设计的含氟弹性体制成的套筒式唇形密封件的开发。新型唇形密封件能够在接近零摩擦的情况下运行。与最先进的气体润滑机械密封相比，通过简单、坚固、