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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > McMaster Keg O-Ring List
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Old 11-01-2011, 03:24 PM   #11
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Thanks for this thread. My LHBS sells the dip tube o-rings for $0.55 a piece, so $4.46 for 100 of them is amazing!


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Old 11-01-2011, 07:43 PM   #12
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It seems that the standard post o-rings for ball locks are a bit small in thickness for use on a pin lock post. I think I am going to try using the next thickness up (0.139") for pin lock posts.


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Old 11-07-2011, 05:47 PM   #13
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Quote:
Originally Posted by barrooze View Post
It seems that the standard post o-rings for ball locks are a bit small in thickness for use on a pin lock post. I think I am going to try using the next thickness up (0.139") for pin lock posts.
Thanks! Report back and let me know how it works out. I have added a note that this may be the case to the first post. Can you provide links/part numbers for what you use as well, please?
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Old 11-07-2011, 08:04 PM   #14
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Originally Posted by Gremlyn View Post
Thanks! Report back and let me know how it works out. I have added a note that this may be the case to the first post. Can you provide links/part numbers for what you use as well, please?
Will do.
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Old 11-18-2011, 10:23 PM   #15
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Originally Posted by 724b View Post
The quad sealing dip tube o-rings seal a lot more easily.

I wonder if they make quad sealing silicone.
+1 on this. Does anyone know if there is a silicone version of the quad sealing dip tube buna-n o-ring (#90025K368)?
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Old 11-21-2011, 05:01 PM   #16
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Does anyone know what the actual lid Oring size on the older 10gal screw top kegs? I sort of fashioned my own for fermentations out of vinyl tube, but would like a proper oring. As best as I can figure it's 1/4" and about 4 5/8" however I can't find anything that size. I likely need to buy stock and a splicing kit.

Any ideas?
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Old 11-23-2011, 05:29 PM   #17
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Just rebuilt 2 kegs and they sealed great with the new rings.

Thanks for putting this together!
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Old 12-29-2011, 02:46 AM   #18
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Thanks for sharing this organized information to help with the re-building of my kegs, as I have gas leaking.

Perhaps, you might consider adding crayzworld's suggestion for Dip Tube Silicone O-rings @ $9.44/100 #9396K215 to your Master List, rather than in the notes (I missed it on my first read).

Since I am still learning, will you tell me where is the "internal disconnect O-ring" located? I assume it is in the pull-up valve that allows air/CO2 to escape thru the lid. However the word "quick disconnect" has me confused. Would you replace this O-ring at the same time you are re-building the keg?
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Old 12-29-2011, 06:50 PM   #19
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Thanks. Now, I understand.

Do you think one of these O-Rings (039K18 ($6.11/100) can be the reason I have a CO2 leak in my system. I will replace the gas o-ring.

I was thinking of this test. First, turn the gas on from the regulator to the grey ball lock connection, then put the connection in water, looking for bubbles. Also test the tank and regulator connections for leaking. If no leaks are found, replace that O-Ring for the internal quick disconnect.

My beer side and the lid o-rings appear to be OK.

Is there any gauge available to test to see if a pressurized empty cornelius keg is maintaing pressure over a period of time. This is my first encounter with a CO2 going empty real fast.
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Old 12-30-2011, 02:24 AM   #20
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Default Thanks for Homebrew Finds

Along with the other good information you have provided, I have checked out all the tips on Homebrew Finds, a really good find. Thanks.


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