Study of the Sealing Characteristic of Polytetrafluoroethylene-Coated O-Ring Applied in Gas-Tight Deep-Sea Water Sampler

Abstract:

In ocean science research, it often requires the integrity of the gas content in samples of seawater. The gas-tight deep-sea water sampler (GTWS) based on pressure self-adaptive equalizer (PSAE) can satisfy the requirement very well. The PSAE is required to achieve a reliable dynamic sealing in deep sea. The general O-ring is difficult to meet this requirement. The polytetrafluoroethylene (PTFE)-coated O-ring is chosen as the sealing parts. The finite element analysis (FEA) software ANSYS is used to analyze the contact pressure of the PTFE-coated O-ring in different conditions, that is, analyze the GTWS’s gas tightness theoretically. Combine with the sea trial results, the feasibility and reliability of the PTFE-coated O-ring in deep-sea dynamic sealing in PSAE can be prove both in theory and practice.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 3-10
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.3
• Online since: July 2011
• Authors: Hao Cai Huang, Yan Ying Ye, Can Jun Yang, Jian Xing Leng, Ying Chen
• Keywords: Deep Sea, Finite Element Analysis (FEA), Gas Tightness, Polytetrafluoroethylene-Coated O-Ring

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