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Posted by D Sherman [72.47.9.228] on Thursday, August 05, 2010 at 16:29:12 :
In Reply to: Re: They're aerospace: "tri-wing" posted by Doug in CO [68.177.210.73] on Thursday, August 05, 2010 at 14:26:28 :
Also used to hold together the two halves of a valve that you're supposed to replace for $400 when it starts leaking rather than take apart, clean out, and fix.