Reg servicing and SPG

[herman]

Silicone is fine except for high concentration/high pressure O2 applications. The whole Trilube/Cristolube/viton oring thing has gotten way out of proportion. If you are servicing regs for pure O2 or high O2 deco applications, the grease is a concern, for rec nitrox applications (<40%) silicone grease is fine both inside and outside of the regs. I would not mix them due to possible interactions of the greases themselves. Which one is better...the one you have.

 

[Couv]

Exactly.

Other than high O2 applications, the only concern about using silicone grease would be on silicone o-rings. Silicone seals will absorb the grease and swell causing a leak.

Like JimLap, I got rid of my silicone grease just as a preventative measure so I don't cross contaminate anything. But if you service just your own stuff and KNOW you won't be using high concentrations of O2, save money and use what you have.