I have a set of Robinair Enviro Guard hoses. I've always thought that
a tad bit of O-ring lubricant helps to form a good seal. (especially
when pulling vacuum down to <500 microns and performing a reliable
What do you use to lubricate rubber seals and O-rings for R22 systems.
Mineral oil, Vasoline, Silicon Grease or Vacuum Pump Oil.
Is one of these lubricants better then the others to help get a tight
seal, protect the O-ring and be compatable with R22 systems. (however
we're only talking about 1 drop or two per fitting)
Yes I know that you can special order fancy O-ring lubricants but I
want to limit my choices to the above or something else that's fairly