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Unable to replace O-ring on Aquagrafx 470

post #1 of 7
Thread Starter 
I have been running a 470 with an aquagrafx block for nearly two years. I am upgrading my computer so I decided to clean out the block while my loop was disassembled.

Now for the life of me I cannot get the o-ring on the GPU block back in place to put it together as it seems the o-ring is now a little too long for the groove. I have sent Aquacomputer and email about getting a replacement o-ring, but aside from ordering a new one, does anyone have any ideas about what I could do?

I don't think I stretched it when taking the block apart, but I suppose it is possible I did. It is also possible the o-ring was stretched from the pressure of the block when it was originally assembled.

700

The tape is simply holding the o-ring in place.

My ideas so far:
1) Cut the o-ring to the necessary length, and then attempt to rejoin the edges with a lighter (or some other heat source). I am going to practice on some extra barb o-rings I have. Doesn't work.
2) Order a replacement o-ring (would mean I would have to build my new loop GPU free and then rebuild when the part arrives).
3) Post the problem here and hope somebody has a better idea!
Edited by mdatmo - 4/12/12 at 5:24pm
 
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post #2 of 7
Silicone grease, find at your local HD or Lowes. Little goes a long way.
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post #3 of 7
Throw it in the freezer for 20 minutes, have the block plate clean and ready to go. It may contract a little and work quickly. Barring that your local bearing supplier may have a O-ring splicing kit available. bike.gif
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post #4 of 7
Quote:
Originally Posted by gdesmo View Post

Throw it in the freezer for 20 minutes, have the block plate clean and ready to go. It may contract a little and work quickly. Barring that your local bearing supplier may have a O-ring splicing kit available. bike.gif

Yep get that O ring cooled right down but not to the point of it getting brittle just so it gets shrunk down, and once its out work quicking but don't rush it or you may miss.
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post #5 of 7
Thread Starter 
Thanks for the replies, I'll give them a go when I'm off work and report the results.
 
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post #6 of 7
OK. Am I the only one seeing nickel flaking/degrading/corrosion here?axesmiley.png
What coolant did you use?

168

You should RMA that block!
Edited by DirectOverkill - 4/13/12 at 12:54pm
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post #7 of 7
Thread Starter 
Quote:
Originally Posted by DirectOverkill View Post

OK. Am I the only one seeing nickel flaking/degrading/corrosion here?axesmiley.png
What coolant did you use?
You should RMA that block!

The block has been in a loop with distilled water, a silver kill coil, and a copper CPU block for two years (maybe a month short of two years). The top plate of the GPU block is also stainless steel. There is no reason at all to RMA the block as a little corrosion is to be expected after running a mixed metal loop for years with out any anti-corrosive additives.
Also, a lot of what appears to be corrosion in the above image is really just gunk, probably from not flushing our my rads well enough.

Looks like I will have to either get a replacement o-ring from Aquacomputer or find a store to order one. They don't have any of similar dimensions at local hardware stores and it is still too large after cooling it.

Edit: I ordered a new o-ring from Aquacomputer that arrived yesterday. Sure enough the new oring was several mm smaller than the old. I still don't know how the old one become elongated, but the new one fit perfectly!
Edited by mdatmo - 5/10/12 at 4:32pm
 
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CoolingCoolingOSOS
MCP 35X and a MCP 350 Koolance 401x2 Opensuse 12.1 Windows 7 
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