I go through a lot of trouble to keep the cold side of brewing sanitized to prevent infection. I then proceed to use my finger to spread keg lube on the o-rings on my keg. It just seems like the least sanitary thing I do on that side of brewing. Anyone else get the heebie-jeebies from lubing up?
I don't lube it up. It's kind of a waste anyways. It's there to aid in keeping the oring moist, and it help keep it from getting torn up from the connection, usually a ball lock. I spray it with starsan and make sure to put the connection on cleanly, pulling up on the QD to make sure it's not going to destroy the orings. Past that.. I've always been told, and have always found it to be useless mostly.
I use a lot of starsan in the process too. I wonder if you're about to get some flack from people who have ripped o-rings and either emptied a cylinder of CO2 or had a keg of beer entirely leak out.
I put the lube on with my finger as well. I really get in there too. After I lost a whole bottle of co2 from a jacked up o-ring I add a little lube every time.
I don't really care about catching any flak. If you are smart enough to keep the oring wet when you put the fitting on, it's pretty easy to not allow the balls of the disconnect to rake over the o-ring. Slathering it with an over priced food grade lube is pretty much over kill, IMO. Some might find it hard, and for that, there's lube. To answer the original question, If you are pushing it down inside of the poppit, then I can see it tasting odd or being unsanitary, but lets be honest. Once it's kegged, it's going to be pressurized and once the beer leaves the keg, it's in the lines on it's way to your glass, and then your gut. I doubt in the short span it travels it's going to deteriorate so bad that you run the risk of a sanitation issue greater than anything the beer has already been subject to. Little to nothing to worry about.
I lube, it's cheap insurance. I also replace o-rings at least yearly. I've lost tanks of CO2 and kegs of beer to bad o-rings. I use my dirty finger as well. I figure that by time I'm lubing I'll be consuming the keg within 4 or 5 weeks so I don't worry about infection. If it's a keg for storing, I'll take a little more care and spray IPA and then star san on connectors.
meh, there is enough alcohol in the beer by that point to kill any nasties that may be on your fingers.