curiosity, white o-ring material?

[bracconiere]

so if black is buna-n, red is silicone. what are the white lid o-rings made out of, and what be a lube for them?

most of mine are black, but i do have 1-2 white ones. not sure what they are made from....

 

[marc1]

Appears to be silicone
https://www.morebeer.com/products/corny-keg-lid-oring.html

 

[marc1]

Not a huge fan of them for beer because they are fairly o2 permeable. Probably not a big deal for you as you go through your kegs pretty quickly.

 

[bracconiere]

thanks for doing the leg work...didn't think to check more beer....

 

[sibelman]

Dang! My new kegs came with white and I want a batch to last a couple or three months. I wonder whether it would be worth replacing all the rings with less permeable black BUNA. The war against oxygen takes another turn...

 

[bracconiere]

Dang! My new kegs came with white and I want a batch to last a couple or three months. I wonder whether it would be worth replacing all the rings with less permeable black BUNA. The war against oxygen takes another turn...

glad my question and @marc1 's work on it benefited more then just me!

strange thing, i think a lot of people prefer the white ones because their bigger/softer though?

 

[bracconiere]

how o2 permeable is neoprene?

 

[sibelman]

There's some data out there on the interwebs such as this. Not sure how worried too be about keg o-rings vs. tubing. Time is a key factor.

 

[bracconiere]

There's some data out there on the interwebs such as this. Not sure how worried too be about keg o-rings vs. tubing. Time is a key factor.

according to that, i might see if silicone tape is cheaper then tyvek! lol (i didn't see neoprene listed though?)

 

[sibelman]

I found EDPM at a slightly sketchy web site valuebrew.com - I think I've heard that's quite low O2 permeability