BELLOWS TYPE MECHANICAL SEAL
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United States of America Patent
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N/A
Issued Date -
Jan 19, 2012
app pub date -
Mar 11, 2010
filing date -
Mar 30, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A bellows type mechanical seal including a sealing ring and a mating ring, wherein either one of the sealing ring or the mating ring is retained in a housing and the other one is mounted on a shaft and wherein the sealing ring is supported by a bellows and the bellows has a retainer welded thereto on one of the sides for retaining the sealing ring and a collar welded on the other side to form a bellows assembly, is characterized in that the entire surface of the bellows assembly is covered by an erosion-resistant film formed by the physical vapor deposition, such as ion-plating.
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