Zero dead volume tube to surface seal
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United States of America Patent
Stats
-
May 2, 2000
Grant Date -
N/A
app pub date -
Sep 12, 1996
filing date -
Sep 12, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
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.
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