Good lubricant for O rings and threads?

Hey guys, Any input? I have been using regular vaseline because I figured it will not harm human skin so it will not harm flashlights? Please advise. Thanks.

Supposedly petroleum lube (Vaseline) degrade the rubber. Make them dry over time and they crack.
I always been recommended silcone grease. I use Nyogel by Armytek. I’ve got a small tube of it which I’ve been using for years and it’s not even half empty

Superlube from harbor freight, cheap, readily available, and useful on a variety of applications. The teflon content is handy

Thanks for input. Thank goodness I only used a little bit. BTW, should I just wipe clean on what I have on there now?

WOW!!! I buy at Harbor Freight and never knew it. I shop there at least 3-4 times a week. Thanks for input.

I use this most times,

Coconut oil

Thanks guys for input. I would like stuff more readily available. Harbor Frieght and coconut oil seems good. If any others besides ones listed please add to list.

I use silicone grease on my torches and fountain pens. Apparently it’s also used on SCUBA equipment.

Do you mean the stuff that can be bought at Home Depot, Lowes, Orchard, etc…. ?

I use this stuff most of the time. Flashlight Lube
Although I do have some nyogel from fordmotorcraft , thats suppose to be good, same thing as the Armytek but cheaper.
I found this out back when I was a member of that other forum. you can google search for “sold out nyogel 760g” if you wanna read up.

Has anyone else tried PB Blaster silicone spray?

I have a couple cans in the garage, tried it out earlier today and it seemed a little thin. Haven’t tried SuperLube or Nyogel but may pick up some SuperLube next time I’m near Harbor Freight.

Vaseline will cause rubbe rorings to swell and distort. Try chap-stick (blue) or silcone grease.

I use militec-1 (grease & oil) on my knives, guns and flashlights

Thought PB blaster had some kind of corrosive stuff in it. Thought that’s how it attacks rust to free things up.
I checked the link out, not the same stuff as I was thinking of.

Nye Nyogel 760G. Started with a 2oz./57gm tube 6 years back and it’s still pretty full.

I do things every six months, or so.


My personal opinion is that it doesn’t really matter what one uses as long as they clean and re-lube regularly. I doubt many (or any) who offer an opinion have done detail scientific research into the best lubricant. I personally go with what I have handy and within reach when I’m cleaning the threads.

Their penetrating oil does. Their silicone spray product does not, as far as I know. Not that I’m recommending it - I’ll probably pick up something thicker soon.

The XG-12 Ford Motorcraft Electrical Grease is Nyogel 760G. GM and Chrysler also have it. Can be picked up at your local Ford dealer parts counter.

Thanks guys for all info. I do not regularly use vasaline so I think I am OK. Just used it once. But better safe than sorry. One of my lights is $380 range and definitely do not want to mess it up. Thinking of buying Fenix TK75 2018 and that bad boy will be $300 plus range so need some good lube.