Seawater resistant grease
Seawater resistant grease
(OP)
Hello,
I am offered two types of grease that I can use for bearings operating in seawater. One has a lithium soap as thickener (Castrol Molub-Alloy 860/460-2), the other one has a calcium soap thickener (Kluberplex BE31-502). Which one is better suitable? Or are there other greases found to be suited for salt environments (splashing with seawater)? Thanks, Robert
I am offered two types of grease that I can use for bearings operating in seawater. One has a lithium soap as thickener (Castrol Molub-Alloy 860/460-2), the other one has a calcium soap thickener (Kluberplex BE31-502). Which one is better suitable? Or are there other greases found to be suited for salt environments (splashing with seawater)? Thanks, Robert





RE: Seawater resistant grease
The _only_ grease I found that was at all resistant was Dow Corning's highest viscosity silicone vacuum grease, which would be a decent bearing lubricant only when hot.
You might consider a grease optimized for the bearing application, protected from seawater by a v-ring seal and vacuum grease. Of course that requires changing the design so that the v-ring lip has something to ride on, like a thin stainless washer.
Mike Halloran
NOT speaking for
DeAngelo Marine Exhaust Inc.
Ft. Lauderdale, FL, USA
RE: Seawater resistant grease
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Corrosion never sleeps, but it can be managed.
http://www.trenttube.com/Trent/tech_form.htm
RE: Seawater resistant grease
RE: Seawater resistant grease
RE: Seawater resistant grease
It is a tough balancing act. At least Krytox is a good lubricant.
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Corrosion, every where, all the time.
Manage it or it will manage you.
http://www.trent-tube.com/contact/Tech_Assist.cfm
RE: Seawater resistant grease
However, we are also experimenting with solid synthetic lubricant of jsh industries, called H2000, and are also still interested in the Krytox.