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> Keg O-rings, contributed by stout_fan & MtnBrewer
cj in j
post Apr 29 2005, 05:58 AM
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Buying Keg O-Rings in Bulk
contributed by stout_fan and MtnBrewer

Q: I just got a bunch of used kegs and I want to replace the o-rings. Do you know where I can get them in bulk?
A: Sure. You can get corny keg o-rings from McMaster-Carr. Here's what you'll need (prices as of May 1, 2005):

(1) Dip Tube O-Rings
5/16" ID x 1/2"OD x 3/32" width
9452K172 BunaN #109
Pkg 100/$2.24

(2) Post O-Rings
7/16" ID x 5/8" OD x 3/32" width
9452K23 BunaN #111
Pkg 100/$2.77

(3) Lid O-Rings
3 1/2" ID x 4" OD x 1/4" width
9452K218 BunaN #417
Pkg 10/$12.50

Q: What about the so-called quad-rings (a.k.a., h-rings, double-seal rings) for the dip tube seals?
A: Dip tube seals: 90025K368 - Double Seal Buna-N O-Ring As568A Dash #109, Pkg 100/$4.72
Post O-Rings (A70 durometer): 90025K224 Dash #111, Pkg 100/$11.40
Post O-Rings (A50 durometer): 2418T136 Dash #111, Pkg 100/$9.00

Q: Those are more expensive than the regular o-rings. What's the advantage?
A: They seal without excessive force. Tightening the posts too much can result in galling the threads.

Q: I've also heard that silicone o-rings work better than Buna-N on the posts. Is there a part number for these?
A: 9396K24 - Silicone O-Ring As568A Dash#111
Pkg 100/$13.53
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