Re: O-ring collapse

[JJK1204@domain.elided]

In a message dated 4/8/99 12:40:08 AM Central Daylight Time, agiyo@domain.elided 
writes:

<< What on earth is collapsing those rings into the passages?  Anybody?
 
 Joe >>

Joe,
O-rings are not usually designed to seal flat surface to flat surface. In 
most cases a groove is used to retain the o-ring position. O-rings do not 
form a perfect seal, there is almost always some leakage, unfortunately NASA 
now understands the ramifications of this dynamic. So ... couple the leakage 
behind the o-ring and the fact that it is not grooved in place and you get 
walkin'.

John Katos
former gasket tester guy at Fel-Pro Inc.

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