The correlation between the micro surface roughness and sealability of O-rings was experimentally analyzed. We developed a SMLA (Seal Micro Leakage Analyzer) for observing the contact of micro asperities using a micro-prism glass plate, and a micro-leakage measurement device for O-rings. Using the SMLA, the contact of micro asperities of O-rings surfaces ranging from 1.6 microns to 16.3 microns was clearly visualized. We also measured the contact area and leakage amount at the same time, and studied the sealing mechanism. The visualized images of the contact area were analyzed by image processing. The results showed that the micro asperites on the O-ring surfaces were squashed elastically to form a band which sealed in the fluid.
Micro Surface Roughness of O-rings and Sealing Mechanism
Sae Technical Papers
SAE 2002 World Congress & Exhibition ; 2002
04.03.2002
Aufsatz (Konferenz)
Englisch
Micro surface roughness of O-rings and sealing mechanism
Kraftfahrwesen | 2002
|SAE Technical Papers | 1992
SAE Technical Papers | 1977
SAE Technical Papers | 1940
SAE Technical Papers | 1940