Seal arrangement and a method of repairing a seal arrangement
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United States of America Patent
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Sep 1, 2015
Grant Date -
May 30, 2013
app pub date -
Jan 25, 2013
filing date -
Apr 29, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
The seal arrangement is arranged between the casing portions and a fluoropolymer O-ring seal is positioned between the casing portions. A first protecting member is positioned between the fluoropolymer O-ring seal and the casing portion and the first protecting member consists of a polymer and hydroxyapatite. The first protecting member consists of 50 to 80 wt % polymer and 20 to 50 wt % hydroxyapatite and incidental impurities. The first protecting member is located in an annular groove and is thus arranged between the casing portion and the fluoropolymer O-ring seal. The first protecting member is substantially U-shaped in cross-section and the fluoropolymer O-ring seal is positioned between the legs of the U-shaped cross-section first protecting member. The first protecting member prevents corrosion of the casing portion by the fluoropolymer O-ring seal.
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