Optimization of O-Rings

[Monkiee]

I have been looking at my Surefires lately and after seeing how the Millennium and other models come with two O-rings on the tail, i wonder if it would be possible or even better to add an extra O-ring to my other lights that only possess one O-ring.:thinking:

Also after inspecting the threads on the body that accept the bezel, i noticed an extra space that might possibly fit a 2nd O-ring.
I am just wondering if doing this would be more useful underwater or just a waste of time. Thanks

 

[Sgt. LED]

I do it to all of my SF that I can.

I am sure it helps to some degree. Plus it makes my G2 tailcap feel more solid.

 

[jayhackett03]

where do you get extra Surefire o-rings?

 

[Policetacteam]

Lighthound has them for about .20 Can't beat that!

 

[jayhackett03]

i can only find o-rings for the m-series on their site.

 

[p1fiend]

I do it to all of my SF that I can.

I am sure it helps to some degree. Plus it makes my G2 tailcap feel more solid.

+12345

It truely boggles my mind that SF doesn't install 2 o-rings on the G2. I just got a second G2, and like the first, the slop/play in the tailcap is horrible :thumbsdow. I immediately added a second o-ring which makes the tailcap and operation feel much more assuring.

I'm sure that an extra o-ring wouldn't cost SF more than $0.05, but installed it would probably cause even more SF inflation.

 

[D-Dog]

I don't see the reason anyone shouldn't add one because if the light is already waterproof to 33 feet (SF claim), the second o-ring should only further help this rating. Plus, most "professional" lights do have two, especially if the light is a twisty and you are going to be twisting it under water.

 

[kramer5150]

I like the dual O-ring on my M2 tailcap. I can really GRIP it with a full fist without it turning. IMHO it further prevents accidental turn on and ensures a SOLID lock-out. I've never tried adding a second one in the bezel. You could even take it a step further and use teflon tape.

 

[RobertM]

Is adding an extra o-ring to the bezel not as big of a deal? I'm curious since the Millennium series lights have two o-rings in the tail, but only one for the bezel.

Hmm, I might to have to buy some o-rings so that ALL of my SureFires have two o-rings in both the bezels AND tailcaps

 

[matt0]

I don't see the reason anyone shouldn't add one because if the light is already waterproof to 33 feet (SF claim), the second o-ring should only further help this rating. Plus, most "professional" lights do have two, especially if the light is a twisty and you are going to be twisting it under water.

Where did SureFire claim this? This has been the subject of several threads in the past...

Their lights should be fine in heavy rain or for a brief dunk underwater but as far as I know, SureFire have never explicitly said their lights are good for 33ft.

 

[nzgunnie]

I don't see the reason anyone shouldn't add one because if the light is already waterproof to 33 feet (SF claim), the second o-ring should only further help this rating. Plus, most "professional" lights do have two, especially if the light is a twisty and you are going to be twisting it under water.

You might be in for a nasty surprise if you think that.

 

[kramer5150]

I can guarantee all of CPF... I will bet my two kids on it (LOL), the Surefore 6P and M2 are NOT water submersible if you cycle the OEM twist-cap while submerged.

Unscrewing the cap creates a vaccuum chamber and it sucks water past the O-rings, regardless of how many O-rings are used.

You can validate it for yourselves. take out the batteries and LA. Fill the sink. Dunk it and unscrew the cap a turn or two and let it sit for 10 minutes in the water or cycle the switch a few times submerged. Pull the light, dry it off and unscrew the cap and inspect for wetness....

Dunking it while leaving it on however gets a :rock:.. at least for the first ~4 feet. Thats as deep as my son can swim

I don't know what Surefire is trying to accomplish by advertising 33 feet water submersible.

 

[D-Dog]

I was getting the info from flashlightreviews.com as the site has been very reputable and is now the basis most other reviews use


UPDATE: Surefire has affirmed that all current Surefire lights should be waterproof to about 33 feet/10 meters. Some reviews were posted before Surefire made the affirmation that their lights were watertight to 1 atmosphere depth. Any new Surefire lights you purchase now should be considered waterproof to 33 feet/10 meters.

Because this claim was made over 2 years ago, I presume most of the Surefires you are talking about have been bought since then. I don't trust the depth rating either which is why I said "SF Claim" and not "SF's ARE waterproof to 1 atm..." I too would prefer a clicky vs a twisty or a dive light for that matter... however, back to the OP... two o-rings ought to be at least a little better than one

 

[asdalton]

I wouldn't trust any light to consistently hold up to deep or extended immersion unless it's designed and sold as a diving light.

 

[Yoda4561]

I was getting the info from flashlightreviews.com as the site has been very reputable and is now the basis most other reviews use


UPDATE: Surefire has affirmed that all current Surefire lights should be waterproof to about 33 feet/10 meters. Some reviews were posted before Surefire made the affirmation that their lights were watertight to 1 atmosphere depth. Any new Surefire lights you purchase now should be considered waterproof to 33 feet/10 meters.

Because this claim was made over 2 years ago, I presume most of the Surefires you are talking about have been bought since then. I don't trust the depth rating either which is why I said "SF Claim" and not "SF's ARE waterproof to 1 atm..." I too would prefer a clicky vs a twisty or a dive light for that matter... however, back to the OP... two o-rings ought to be at least a little better than one

That's something I used to quote whenever someone asked, but it seems that surefire is no longer affiming any such thing, at least not on their website. I'm still pretty confident that if the twistie is not used underwater it'll be fine even for extended dunking.

 

[curlyfry562]

I add the extra o-ring on all my C-series Surefire Tailcaps, the only one that wouldn't fit was my U2.

Interesting about the water resistance and the twist switch, I guess is is another reason to upgrade to clickies.

 

[jayhackett03]

So where can I get o-rings for my G2?

 

[Grox]

So where can I get o-rings for my G2?

Try lighthound : http://www.lighthound.com/O-Rings-for-Flashlights_c_101-1.html