Customer of mine is wanting me to confirm that a hydraulic fitting I am selling him will withstand 800F. The fitting is a standard issue hydraulic fitting (#12 BPP Female Coupling) that will be welded to 6" SHD 80 pipe. The pipe is on the exhaust side of a diesel engine onboard a cruise ship. No real pressure to speak of because it's venting to atmosphere. I haven't had much luck finding a clear cut answer. Since i'm in bearings and PT now I don't have the same contacts I use to. Any ideas?