Nielsen device lube?

[Ericpwp]

I can see the device needs some lubrication to work effectively. What do you use that won't harm the o-rings? Also... How often do the o-rings get replaced?

 

[ljk]

It's the dirtiest part of the can, so I don't see the need for carbon/powder trap.

If you wanna do it, some motor oil should be fine.

 

[M67]

I might use a little slip 2000 on the piston but it functions fine without it and it doesn't blow lube back at you

 

[STFU]

I use white lithium grease. Stays put and lasts well.
As for the o-rings, I replace them when the split.