Cornelius Keg O-ring sizes

Does anyone know what sizes of O-rings are used to outfit a Cornelius keg? Are there different sizes for Ball lock and Pin lock? I have both. I thought it might be more economical to buy in bulk from McMaster-Carr.

#109, #111, and #417. I really like silicone because they don't get hard in the cold. A little pricier sure, but you're buying in bulk anyway.

Bobby: Thanks! However, I don't see that number as a catalogue number in their website. Are the numbers you gave me sizes?

**edit** I found what you were referring to...thanks! Do you use only silicone?

I've been switching over to silicone every time I change out a keg. I just like how soft they stay at 40F. You don't NEED it, but it's a nice touch.

9396k74
9396k24
&
9396k926?

Thanks, guys!

Just got my order from McMaster-Carr yesterday!!! :rockin:

Now to start getting those Corneys clean... :cross:

Bobby_M said:

I really like silicone because they don't get hard in the cold. .

Click to expand...

But do they shrink?

Silcone O rings should not shrink.

gruversm said:

Silcone O rings should not shrink.

Click to expand...

I think he meant..

[youtube]BVHRWSl1z8U[/youtube]

Restating the second part of my original question: Are the O-ring sizes the same for both Ball Lock and Pin Lock cornies?

The sizes are close enough for both kegs. The posts are SLIGHTLY larger on pin locks so the #111 stretches out a little bit. I've also used #112 on a pinlock and it seems a slight bit loose on the post recess until you put the disconnect on. I haven't tried it, but a #205 might be the sweet spot for a pinlock since the ID/OD is about the same but the crossectional diameter is .139" instead of .103" on the #111.

Unfortunately (ish), the #111 works well enough that I can't justify buying 50 more to try it.

Bobby: Thanks for clarifying. This is the reason why Northern Brewer had to 'part out' a set of gaskets for the 10 pin locks that I inherited. They didn't want to sell me the stock gasket replacement kit.

I found this video...

The video says BS 008

I mic'd out my o-rings, which are in pretty bad shape, but the size looks correct. 0.070, 3/16 id, 5/16 od.

mcmaster has these
http://www.mcmaster.com/#o-rings/=i1vd39

I opt'd for the square ones, because I don't think the o-rings are round.

Unfortunately, the square ones are $10/100 and the round ones are only $2.


Anybody have an opinion on square vs round?

yags said:

I found this video...
http://www.youtube.com/watch?v=GGWJwABMcVA
The video says BS 008

I mic'd out my o-rings, which are in pretty bad shape, but the size looks correct. 0.070, 3/16 id, 5/16 od.

mcmaster has these
http://www.mcmaster.com/#o-rings/=i1vd39

I opt'd for the square ones, because I don't think the o-rings are round.

Unfortunately, the square ones are $10/100 and the round ones are only $2.


Anybody have an opinion on square vs round?

Click to expand...

Just in case anyone is looking for the poppet o-rings from McMaster I just ordered the BunaN ones under p/n 9452K16 (as568a Dash number 008) for $2.08 for a pack of 100.

There's a big old sticky thread on this in the Equipment section

McMaster Keg O-Ring List