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Title: Zero dead volume tube to surface seal

A method and apparatus for connecting a tube to a surface that creates a dead volume seal. The apparatus is composed of three components, a body, a ferrule, and a threaded fitting. The ferrule is compressed onto a tube and a seal is formed between the tube and a device retained in the body by threading the fitting into the body which provides pressure that seals the face of the ferrule to a mating surface on the device. This seal can be used at elevated temperatures depending on the materials used. While the invention has been developed for use with micro-machined silicon wafers used in Capillary Gas Chromatograph (GC), it can be utilized anywhere for making a gas or fluid face seal to the surface of a device that has near zero dead volume.
Authors:
 [1] ;  [1]
  1. (Livermore, CA)
Publication Date:
OSTI Identifier:
872973
Report Number(s):
US 6056331
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Patent
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
zero; dead; volume; tube; surface; seal; method; apparatus; connecting; tube; surface; creates; dead; volume; seal; apparatus; composed; components; ferrule; threaded; fitting; ferrule; compressed; tube; seal; formed; tube; device; retained; threading; fitting; provides; pressure; seals; ferrule; mating; surface; device; seal; elevated; temperatures; depending; materials; developed; micro-machined; silicon; wafers; capillary; gas; chromatograph; gc; utilized; gas; fluid; seal; surface; device; near; zero; dead; volume; mating surface; dead volume; dead volume; dead volume; elevated temperatures; elevated temperature; silicon wafer; gas chromatograph; silicon wafers; provides pressure; zero dead; zero dead; capillary gas; threaded fitting /285/29/