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Whats the need for O rings?

post #1 of 12
Thread Starter 
So im just wondering if i actually need to get any? Im getting these compression fittings which dont need them. Are O rings only for fittings? Is the purpose to stop leaks?
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post #2 of 12
They help to create a watertight seal.
If you have the option to use them, do.
Compression fittings are still fittings so the screw-in side should still need O-rings.

Edit: But I'm guessing those come with them, right? Looks like an O-ring is there in the pics.

Oh and to answer your other question, they also have them in between the halves of pumps or CPU blocks, most places with a surface up against another where the gap needs to be watertight probably have an O-ring somewhere in the middle.
Edited by Mike-IRL - 8/10/11 at 11:35am
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post #3 of 12
It should come with o-rings, and its to keep it water tight
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post #4 of 12
Thread Starter 
I thought they come with them but are they already attached?
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post #5 of 12
Looks like it, mine were anyway.
And as long as they come with them that's good enough.
Just be sure to use them as you'd be a lot more likely to have a leak if you didn't.
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post #6 of 12
Quote:
Originally Posted by 8564dan View Post
I thought they come with them but are they already attached?
Yes they are...

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post #7 of 12
Thread Starter 
Awesome, so there wouldnt be any point in adding another just for more protection then? Or it may not screw in properly if i did i guess?
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post #8 of 12
No, there's no point adding a second. It will work better with just one.
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post #9 of 12
Thread Starter 
Do people still need to buy them much? Or do most things come with them already on?
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post #10 of 12
Chances are that most of the watercooling parts that use them will be sold with them included... It's not like they're a "big money" item where the manufacturers/retailers can price gouge.
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