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http://dx.doi.org/10.7842/kigas.2012.16.5.52

A Study on the Sealing Characteristics of Multi-contact O-rings  

Kim, Chung Kyun (Research Center for Tribology, Mechatronics and Energy Technology Hongik University)
Publication Information
Journal of the Korean Institute of Gas / v.16, no.5, 2012 , pp. 52-57 More about this Journal
Abstract
This study presents sealing characteristics of multi-contact o-rings as functions of strain, compression stress, and contact normal stress using a FEM technique. The FEM results on the sealing characteristics show that the maximum strain, maximum compression stress, and maximum contact normal stress of multi-contact o-rings are approximately 1.7 times higher than those of conventional o-rings. This is due to a U-grooved cross section of multi-contact o-rings, and the multi-contact o-rings with a U-groove show more effective in sealing for high pressure vessels, valves, and gas equipments. And the extrusion failure in the multi- contact o-ring does not produce for an increased gas pressure due to a U-groove. This may extend sealing life compared to that of a conventional o-ring.
Keywords
o-ring; multi-contact o-ring; sealing characteristics; stress and strain; extrusion failure;
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  • Reference
1 Richter, B., "Perfluoroelastomer O-rings Reduce Risk of Failure", World Pumps, 34-36, (1995)
2 김도현, 김청균, "복합소재 O-링의 압축변형 특성에 관한 연구", 한국윤활학회지, 21(4), 171-176, (2005)
3 김청균, "LPG 충전노즐용 O-링과 패킹의 응력 거동해석에 관한 연구", 한국윤활학회, 22(1), 23-28, (2006)
4 김청균, "LPG 용기 밸브용 O-링의 누설안전성에 관한 해석적 연구, 한국가스학회지, 11(2), 37-42, (2007)
5 MARC, MARC User's Manual Ver. 7.3, MARC Analysis Research Corp., California, USA, (1999)
6 KGS AA212, (2010)