Tribology Letters ( IF 2.9 ) Pub Date : 2022-02-17 , DOI: 10.1007/s11249-022-01573-8 B. N. J. Persson 1, 2
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Interfacial surface roughness can result in fluid leakage of seals, and in the design of seals it is standard to give an upper limit for the surface root-mean-square (rms) roughness amplitude \(h_\text{rms}\). However, \(h_\text{rms}\) is determined mainly by the long-wavelength roughness, which is (nearly) irrelevant for the sealing. I discuss the parameters which determine the leakage of seals, and present results for static rubber seals with circular cross-section (like rubber O-rings). I also study the influence of the fluid pressure on the interfacial surface separation and the leakrate.
Graphical Abstract
中文翻译：
静态橡胶密封件中的流体泄漏
界面表面粗糙度会导致密封件的流体泄漏，在密封件的设计中，标准的做法是给出表面均方根 (rms) 粗糙度幅度\(h_\text{rms}\)的上限。然而，\(h_\text{rms}\)主要由长波长粗糙度决定，这（几乎）与密封无关。我讨论了决定密封件泄漏的参数，并给出了圆形横截面的静态橡胶密封件（如橡胶 O 形圈）的结果。我还研究了流体压力对界面表面分离和泄漏率的影响。
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