Generally Speaking, I think you should replace all keg o-rings when you refurbish or obtain a used keg.
What about after that? Of course, you could just keep using them until they break, they smell or look horrible or… until you lose a tank of CO2 due to an o-ring related leak.
How Often Should You Replace Keg O-Rings?
If you’re looking to be more proactive, I would suggest using Daylight Savings dates as a reminder. Something like this…
- Daylight Savings Begins (Spring): Replace high leak risk and high contact o-rings – Post O-Rings (especially gas), Internal QD O-Rings and Universal Poppet O-Rings.
- Daylight Savings Time Ends (Fall): Replace all keg, poppet and QD o-rings.
Most of these o-rings are pennies each when bought in reasonable bulk quantities. Regularly replacing, costs very little and helps stave off unwanted off flavors, leaks and lost CO2. This schedule should keep your kegs working great from a gasket perspective.
The one gaskets that are a little more expensive are lid o-rings. If you wanted to get a little more life out of those, you could replace lid o-rings in odd years when Daylight Savings Time Ends (Fall). This would make them two years old when they’re replaced.
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Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions. top:rebuildkeglnksto lnksto:kegrebuild rp:lnkshowoften