“Silicone Grease” for all o-rings?

[ScubaSamScubaStevesFather]

I plan to use this silicone grease to lube up my new manifold dynamic o rings (and apparently o should lightly line the threads too…):

Marine Sports Silicone Grease .25 oz
https://a.co/d/35UdWRp

However, I’m unclear if this is suitable for *all* non-oxygen rated o rings, including manifold o rings. Specifically, I want to know if it’s a true statement that pure silicone grease can be used for *all* non-static o rings that will be exposed to less than 40% oxygen. This includes regs, manifolds, tank valves, lights, and anything else that uses a dynamic o ring.

For further context, the answer to this question will also answer a secondary question I have, which is “are there any silicone o rings used in scuba” <- it sounds like the answer is no, therefore silicone grease can (and should) be used for o rings exposed to lower than 40% oxygen exposure.

Furthermore, if you noticed I referenced dynamic o rings. From my understanding static prongs should never have grease/lube applied to them; please correct me if I’m wrong here.

I know a lot of people say to just use oxygen lube, which I agree with, but that isn’t my question.

 

[runsongas]

don't use it for silicone orings (there are some items that use silicone, like some lights/strobes, dry glove rings, rebreather loops, and some camera housings in particular) but otherwise should be good for buna/viton/epdm/PU in non-o2 clean usage. i would look at superlube which is silicone with ptfe though.

 

[greeniguana]

Info - O-rings for Divers

1: O-rings for Divers Question: I'm a recreational diver. Why should I care about O-rings? Answer: For starters, an O-ring failure could empty your Scuba tank in about a minute. (Table Reprinted by permission) This table appeared in Life Ending Seconds, 3000 to Zero in 72 Seconds, Advanced...

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