February 22nd, 2009
I recently did the annual service on several O2ptima units and I was amazed at the amount of oxygen grease being used. Grease is not the best lubricant for all applications. It is designed for high pressure use, not the ambient pressure seals on a rebreather breathing loop. The use of oxygen grease has gotten way out of hand, almost as much as the use of Viton o-rings.
For the best performance on your O2ptima use silicone lubricants on all the ambient pressure seals on the breathing loop. It will go together easier and the silicone will not attract the dirt and grit like the oxygen compatible grease. We carry the Tribolube 71 and use it when servicing the O2ptima as well as regulators.