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[Choose #1] I use Oxygen safe lubricant on O-rings and if I remember correctly tank neck o-rings should not be lubricated.
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[Choose #2] All my valves are DIN, so none of them have an O ring. Therefore, I cannot use silicone on these imaginary O rings. I also do not use silicone grease on my regulator O rings, as it is not O2 compatible.
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[Choose #1] I have been trained not to do that. We lick the tip of our thumb, look @ O-Ring, then spin thumb around and over the o-ring, using mother nature’s lub while subtly feeling very carefully for any irregularities. Is this really old school now?
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[Choose #2] I wet the o’ring to help it seat and stay in place. Dry O-rings tend to deteriorate faster and pop out just when you don’t want them to.
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[Choose #1] I clean it and have spares. Silicone may not be a good thing for Nitrox and O2 stage use. The perfluoro grease is recommended.
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daz88 - 9/19/2013 1:33 AM
[Choose #1] I dive with a DIN setup, so no worries.
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[Choose #1] For saying no due to DIN, you essentially have the same o-ring, it it is just located on your first stage. Not that the lube is needed. But it is there.
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[Choose #1] I don’t use silicone on any o-ring, as silicone may deteriorate the o-ring. I use Chrystal Lube as recommended by many SCUBA Equipment manufacturers.
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[Choose #1] Nope, I don’t see the need as the one I got did not have grease on it from the factory. Why should I be different? besides I have never lost air from a bad ring, and would switch it out with a new one if there was a prob. I keep a bunch in my save a
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[Choose #1] I don’t. Never seen it done. So I guess it’s been a learn by example thing. Never even thought about it
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[Choose #1] There is no reason to grease a static oring.
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[Choose #1] Hi Greg, My first time on here but it’s a good question. People are giving you different opinions so I suggest contacting the manufacturer of the equipment you are using and see what they say. I am not using Nitrox. Will continue explaination next .
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[Choose #1] This is the first I’ve heard of using silicone grease on your o-ring.
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havoc - 8/15/2013 8:52 AM
[Choose #1] Replaced lots of tank o-rings. Never had issues without lube.
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[Choose #1] potential issue during nitrox fills - I do them dry, if you insist on lube it should be O2 safe
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[Choose #2] Air tanks yes! Nitrox tanks no!
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Agojo - 8/06/2013 7:17 PM
[Choose #1] Never, just put it in and seat it immediately with a tank or pressure gauge. Grease is a magnet for dust/dirt particles. Also have spare O ring on the cord for my valve caps, very seldom need them.
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[Choose #2] It doesn’t hurt to always add a very small amount of proper lubricant to any oring gasket. I compare it to a housing o ring, and only add a small amount so it looks wet when installing
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[Choose #2] A touch of silicone lubricates the O-ring for easier installation.
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[Choose #1] Stupid but never realised that people DO use it when changing the o-ring
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[Choose #2] but i use just enough cristo-lube (sp?) to give it a sheen.
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[Choose #1] I just bring extra o-rings with me.
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[Choose #1] Never greased mine, if I did it would be o2 safe.
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[Choose #1] #3: I don’t have an o-ring there. All my tanks and regs are DIN. ;) Seriously though, if you’re getting partial-pressure nitrox fills you would want to use an O2 compatible lubricant, but why would you need to use anything at all?
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[Choose #2] I usually use a little silicone on that o-ring, but I’m starting to doubt myself, that’s why I started this survey.
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