HamTrainChickenLaser
Contributor
Not sure if the price/value is OK and if 70 durometer is what I need to have on hand?
Is this a good general o-ring kit to buy for scuba diving?
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OP
HamTrainChickenLaser
Contributor
Also can I lube them with this and does it matter if I will use Nitrox??
landphil
Contributor
If it’s not on this page you probably don’t need it outside of some specialized kit - O-Rings - Lubricant - Tools
And 70 durometer will be right for some stuff, probably too soft for many high-pressure applications and too hard for things like screw on battery covers.
The only o-rings I buy in bulk are for my dry glove system (70 d) and din/yoke valve seals (90 d). I do have other random sizes in a couple of little save a dive kits, but thankfully never really need them.
Although, it was cheaper to buy 30 of those o-rings you use to hold your wing inflator than just one. So, I seem to have a lifetime supply of those for me and my friends
And 70 durometer will be right for some stuff, probably too soft for many high-pressure applications and too hard for things like screw on battery covers.
The only o-rings I buy in bulk are for my dry glove system (70 d) and din/yoke valve seals (90 d). I do have other random sizes in a couple of little save a dive kits, but thankfully never really need them.
Although, it was cheaper to buy 30 of those o-rings you use to hold your wing inflator than just one. So, I seem to have a lifetime supply of those for me and my friends
Probably not. While you may have a few usable sizes most will not be useful. I would get one that is more custom for scuba and a fraction of that price.
Example: $16, 90duro, nitrox safe
landphil
Contributor
I’m not sure what type of brake you’re going to lube with that grease. But it’s got some Teflon mixed in with the food-grade silicone, probably in some attempt to grease metal-metal contacts, Regular generic food-grade silicone grease is super cheap. You probably won’t save any money by using the wrong stuff.
And if you’re servicing a part that needs oxygen-safe grease, it’s likely that things are about to go terribly wrong for you
And if you’re servicing a part that needs oxygen-safe grease, it’s likely that things are about to go terribly wrong for you
OP
HamTrainChickenLaser
Contributor
landphil
Contributor
There are a number of scenarios where you’ll have parts that require grease exposed to high O2 levels that could cause self-ignition. But your main takeaway here is that you should never see those parts without a minimum of training so you don’t mess them up and die. If you’re greasing any parts of your air delivery system that you should be messing with, like hoses and tank o-rings, it’s likely that you’re greasing parts that are meant to be dry to help keep the o-rings from extruding out under pressure and falling.
Primarily, you’ll be using your grease for things like camera and light o-rings and maybe your mustache if you want a good mask seal. I’ll usually grease 2-4 dive lights and my drysuit gloves before every dive day. My current camera is meant to be sealed dry- so, at least I don’t need to grease that one.
landphil
Contributor
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It's not just oxygen safe. O-rings are made multiple materials, including silicone. Lights, cameras, and other more delicate items tend to use these more flexible O-rings. You can't use silicone grease on silicone O-rings because they will swell up and leak. Instead, you need to use a PTFE synthetic lubricant.
I just use PTFE based tribolube on most O-rings, especially all camera, strobe, and lights. Ironically, I use Silicone grease on my CCR that uses a lot of pure O2. But only for the big, low pressure, sealing O-rings. These parts a large and need a lot of grease and are rubber. Regulators and high-pressure parts get Tribolube.
Tribolube 71 O2 Compatible Lubricant
The Aerospace Lubricants Tribolube® line of lubrication products are recommended for scuba diving applications.
www.divegearexpress.com
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