Metal Bellows Ambient Crude Oil
Metal Bellows Ambient Crude Oil
(OP)
Does anyone have any experience, good or bad, that they can share with using a metal bellows type seal for ambient crude oil BB1 pump (~200psi discharge).
We had a seal failure which looks to be abrasive damage on the rotor carbon face. The current seal is a pusher type and the springs were not easily compressed after 8 months in service. We've changed to a hard vs hard configuration but I was thinking a metal bellows would help keep the faces together such that solids can't enter easily.
However, I'm getting mixed recommendations from different seal OEMs. Some say the metal bellows is likely to tear or clog. Others says metal bellows would be a good upgrade.
We had a seal failure which looks to be abrasive damage on the rotor carbon face. The current seal is a pusher type and the springs were not easily compressed after 8 months in service. We've changed to a hard vs hard configuration but I was thinking a metal bellows would help keep the faces together such that solids can't enter easily.
However, I'm getting mixed recommendations from different seal OEMs. Some say the metal bellows is likely to tear or clog. Others says metal bellows would be a good upgrade.





RE: Metal Bellows Ambient Crude Oil
Send some pics to see if what you are seeing is abrasive wear. Do the face show radial cracking on the face? If so that confirms vapourisation.
A drawing with full duty conditions may help too.
Await to hear back.