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post #1 of 13 (permalink) Old 05-25-2019, 06:50 PM - Thread Starter
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O ring cpu block....

Hi all,

So im about to tear down my secondary rig for complete cleaning, changing coolant and replace all o-rings on all my fittings.

However i do not have a replacement o-ring for my Koolance 380 cpu cooler, can i still use the o-ring after cleaning (if needed)?

I read somewhere that if you leave the o-ring alone for a couple of hours it will go back to its original shape thickness....?

Either way i always replace o-rings on my fittings with every tear down.
When i have to clean my cpu block the first time i do not replace the o-ring for the cpu.
However this is now my second time i will tear down my secondary rig so can i re use the o-ring on my cpu for a second time?

Lastly how often can you re use a cpu block o-ring?

Thx in advance

Last edited by Cobra26; 05-25-2019 at 06:54 PM.
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post #2 of 13 (permalink) Old 05-25-2019, 08:25 PM
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GPU/CPU O-rings are rated to last 8-10 years if carefully removed, just don't tear it and you can easily reuse it over again. When you remove it and you can put your hands on Parker O-lube or other rubber lubricants, they can come in liquid or in the tube I use liquid, submerge the o-ring in it for 15-20min, remove and rinse well with distilled water and O-ring is like new again.

If you don't have access to any lubricant, just rinse and dry it, it will be fine as well.

Last edited by NewUser16; 05-25-2019 at 08:39 PM.
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post #3 of 13 (permalink) Old 05-26-2019, 04:04 PM - Thread Starter
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Quote: Originally Posted by NewUser16 View Post
GPU/CPU O-rings are rated to last 8-10 years if carefully removed, just don't tear it and you can easily reuse it over again. When you remove it and you can put your hands on Parker O-lube or other rubber lubricants, they can come in liquid or in the tube I use liquid, submerge the o-ring in it for 15-20min, remove and rinse well with distilled water and O-ring is like new again.

If you don't have access to any lubricant, just rinse and dry it, it will be fine as well.
Thank you for the reply,

I see i should have no issues i think my cpu block is now around 5 years old maybe a little more. Hopefully it can go for another cycle.
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post #4 of 13 (permalink) Old 05-26-2019, 04:28 PM
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I literally take a drop of Vaseline in my palm and "string" the o ring through it, just get it shiny, that's all it needs.


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post #5 of 13 (permalink) Old 05-26-2019, 06:40 PM - Thread Starter
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Quote: Originally Posted by Cerberus View Post
I literally take a drop of Vaseline in my palm and "string" the o ring through it, just get it shiny, that's all it needs.
Thanks, so after the "string" then what dry it to remove the vaseline or not? Say you dont remove the Vaseline on your o-ring will it have negative effects when it comes in contact with the coolant?
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post #6 of 13 (permalink) Old 05-26-2019, 06:43 PM
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Quote: Originally Posted by Cobra26 View Post
Thanks, so after the "string" then what dry it to remove the vaseline or not? Say you dont remove the Vaseline on your o-ring will it have negative effects when it comes in contact with the coolant?
Usually I gently run it through my dry fingers after, Vaseline is pretty inert stuff, its just petroleum jelly, a dab in a whole cooling system wouldn't hurt it tooooo much (can't say for certain)


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post #7 of 13 (permalink) Old 05-26-2019, 09:49 PM
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Yap, Vaseline will do it to, its waterproof and has no chemical properties to harm rubber
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post #8 of 13 (permalink) Old 05-26-2019, 09:55 PM
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Quote: Originally Posted by Cobra26 View Post
Thank you for the reply,

I see i should have no issues i think my cpu block is now around 5 years old maybe a little more. Hopefully it can go for another cycle.
I have old Heatkiller block for 780Ti on my old system that has been taking apart by my son several times and the last time I checked it looked still like new so again, as long as you don't rip it and use either of the lubricating suggestions, it will last 10 years and beyond
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post #9 of 13 (permalink) Old 05-26-2019, 10:55 PM
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Quote: Originally Posted by Cerberus View Post
Usually I gently run it through my dry fingers after, Vaseline is pretty inert stuff, its just petroleum jelly, a dab in a whole cooling system wouldn't hurt it tooooo much (can't say for certain)
I was gonna say it might degrade rubber. But if it is gentle for the skin, then its gentle for the oring.

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post #10 of 13 (permalink) Old 05-27-2019, 05:49 PM - Thread Starter
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Thanks for all the suggestions and help guys!

I think i will go with the Vaseline on my cpu o-ring next time when i tear down my rig for maintenance.
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