Keg O-Rings

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Keg O-Rings

Postby dhempy on Wed Jan 28, 2015 9:59 am

Does anyone happen to know of our Keg Lid O-Rings as listed in Tips and Tricks are the "thicker" ones? I was trying to solve a leak issue with one of my kegs .. when I went to the LHBS the proprietor sold me a new thicker O-Ring and it solved my issue. He told me that he only installs the newer, thicker o-rings when rebuilding kegs.

When I get a chance I'll go ahead and measure one of each and try to figure it out.

Dan
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Re: Keg O-Rings

Postby DrDually on Wed Jan 28, 2015 10:19 am

Dan
Visit http://www.mcmastercarr.com
They carry silicon O-rings in many sizes and diameters

Edit: Here is the part number for keg lids from Mc Master Carr 9396K926
March pumps take this -036 o-ring take this one 9396K116
I also have part numbers for keg o rings etc if needed
Last edited by DrDually on Wed Jan 28, 2015 1:50 pm, edited 1 time in total.
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Re: Keg O-Rings

Postby JonW on Wed Jan 28, 2015 10:31 am

One of the things I notice on some lids that don't seal as well is that the legs on the bale seem to be bent slightly. Bending those back down will help to put more pressure against the o-ring. Additionally, going to the thicker o-ring will take up that slack as well.
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Re: Keg O-Rings

Postby DrDually on Wed Jan 28, 2015 1:50 pm

I just edited previous post to include part numbers from McMaster Carr
Enjoy
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Re: Keg O-Rings

Postby lexuschris on Wed Jan 28, 2015 10:01 pm

I have a keg or two that seem difficult to get a good seal ... lost a lot of CO2 to them. I already have the silicon keg lid rings from McMaster-Carr that DrDually posted... but I have not installed them to all my kegs. I think I will try that this weekend, and see if I can get a better seal.
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Re: Keg O-Rings

Postby maltbarley on Thu Jan 29, 2015 12:21 am

Are you using keg lube?
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Re: Keg O-Rings

Postby lexuschris on Thu Jan 29, 2015 12:38 am

Yes, but very sparingly and not consistently. How often do you re-apply, with every washing? How much do you apply? A thin coating, or a goopy one?
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Re: Keg O-Rings

Postby DrDually on Thu Jan 29, 2015 8:36 am

Apply a thin coating...anything more will just make a mess
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Re: Keg O-Rings

Postby maltbarley on Thu Jan 29, 2015 8:31 pm

I use a thin coating when I wash them. I've never had the big o-ring leak.

My biggest problem is the poppets.
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Re: Keg O-Rings

Postby dhempy on Thu Jan 29, 2015 9:27 pm

DrDually wrote:Dan
Edit: Here is the part number for keg lids from Mc Master Carr 9396K926
March pumps take this -036 o-ring take this one 9396K116
I also have part numbers for keg o rings etc if needed


So here are the numbers from the TIps and Tricks page
Dip-tube O-Rings - #9452K172 - Buna-N O-Ring AS568A Dash Number 109 Packs of 100 - $1.89/Pack
Post O-Rings - #9452K23 - Buna-N O-Ring AS568A Dash Number 111 Packs of 100 - $2.15/Pack
Lid O-Rings - #9452K218 - Buna-N O-Ring AS568A Dash Number 417 Packs of 10 - $12.50/Pack

First: Admin or Brent, when you read this seems like the Tips and Tricks page needs an update to include the ones listed by Dr. Dually ... in fact, Chris why don't you post everything you have or at least PM it to Brent so that we can get it to the Tips and Tricks list.

Second: I looked up both of the keg lid o-rings on McMaster and they are the same except one is silicone and the other is Buna-N (1/4" thick). I'll have to go measure the ones I have. I'm sure that they're all the 4" O-rings ... but I can clearly see that the "thicker" one I have does has a larger "width".

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Re: Keg O-Rings

Postby lexuschris on Thu Jan 29, 2015 11:50 pm

Ok, I will be sure to apply a new thin layer with every washing. I also have had problems with the poppets as well. Usually, I just wiggle the top of the ball lock where the poppet seals, and I can get them to behave. .. usually...

The part numbers were from DrDuallys post... I had them in as spreadsheet...

9396K24 Silicone O-Ring, AS568A dash-111, orange, used for ball-lock post
9396K926 Silicone O-Ring, AS568A dash-417, orange, used for lid o-ring
1879T13 Buna-N O-Ring, AS568A dash-007, black, used for ???
9452K172 Buna-N O-Ring, AS568A dash-109 , black, used for ???

Hope that helps!
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Re: Keg O-Rings

Postby DrDually on Fri Jan 30, 2015 8:10 am

lexuschris wrote:Ok, I will be sure to apply a new thin layer with every washing. I also have had problems with the poppets as well. Usually, I just wiggle the top of the ball lock where the poppet seals, and I can get them to behave. .. usually...

The part numbers were from DrDuallys post... I had them in as spreadsheet...

9396K24 Silicone O-Ring, AS568A dash-111, orange, used for ball-lock post
9396K926 Silicone O-Ring, AS568A dash-417, orange, used for lid o-ring
1879T13 Buna-N O-Ring, AS568A dash-007, black, used for ???
9452K172 Buna-N O-Ring, AS568A dash-109 , black, used for ???

Hope that helps!
--LexusChris


The last two rings are used on older pressure relief valves
So far only one has cracked and needed replacement

Also, the "dash" number is an easy way to locate the specific ring you require
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Life is tough. It is even tougher when you are stupid. John Wayne

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Kegged: English Brown, American Amber, Double Barrel Ale
Next up: Kolsch
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Re: Keg O-Rings

Postby dhempy on Fri Jan 30, 2015 8:39 am

I took a caliper and measured a couple of lid o-rings last night. The majority were 0.270 ... I suspect these are the equivalent to the 1/4" rings on McMaster. I did find one ring that measured .305 a shade under 5/16" which I cannot find on Mcmaster) and I believe that this one is the thicker one I was sold.

A quick web search (I shouldda done this first) led me to http://www.williamsbrewing.com/OVERSIZE-KEG-LID-SEALING-O-RING-P58.aspx. So I'll head back over to the LHBS and get a couple of these to have on hand I guess.

FWIW I did read somewhere along the line that the silicone o-rings are softer than Buna ... especially at colder temps and may do a better job of sealing so I'll get some of those on my next Mcmaster order.

Dan
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