How to Lubricate An LED Flashlight Correctly 

It increases the resistance and it lowers the performance significantly.

I don't know of any specific application that would lend itself to a connection issue. The Nyogel product that I use to lubricate would probably be fine.

If it's silicone based then yes

TheMUSICFANATIC67 Thanks for the recommendation!

your very welcome!

Crixus The Gaul know a good day Union

I haven't allowed that to happen, but I wouldn't think a small bit would be harmful.

Yes you can certainly do that.

Thanks! That's good to know.

The video is about lubricating, not cleaning.

Not to my knowledge, no.

I hate to not give you a good answer... but I'm not sure what kind of grease that is.

Dielectric grease is silicone grease.

I wouldn't - If I'm not mistaken, dielectric grease is non-conductive. You will be better served with a grease that is conductive, due to the nature of a flashlight especially around the tail cap area as you do not want to impede the electrical current in any way!

You can safely use any ptfe grease as it doesn't inhibit the electrical current to pass. The contacts don't need a great surface area to conduct electricity, when the metal parts touch it will work because the contact area will press anything away and the metals will touch. The dielectric greases are more a surface protection than a full prevention; it helps to prevent sparks on high voltage applications, it's not the case with a pocket lamp. ps: smear some dielectric grease on your fingers and put in a socket; I'm pretty sure your next post will be from heaven :P haha

True, thanks for mentioning that.

But you can also lubricate the threads as well, to avoid metal to metal contact.

TheFrozenMind yes, but you can also use anything else that doesn't react with the O-rings, the purpose of using silicone grease is to lubricate and prevent wear on the O-rings.

can you suggest other grease I can try?

+Ole Andreas W. Lyngvær I heard where others have used petroleum jelly! Bad move from what I've heard.

lol -- no.

No, you can't. It's too greasy. It's just like buying crap batteries, you don't do it. You pay decent money and buy quality protected batteries that are safer to use and last for years. In this case... you buy Nyogel or something specifically recommend to do the job properly.

Syrbuff ok thanks I will get some of that because I have a lot of flashlights to and they need cleaning

Once it gets above body temperature it starts to liquify.

zippy Yeah...this video is kinda old, but you never know, there are a lot of misinformed people who know nothing about this stuff.