How do I determine what Durometer I need? I have the parts manual for my Sherwood Regulators, and it lists the O-Rings required along with a O-Ring reference chart. It shows G007A, G010A, G011B, G022A, G025A, and G904A.
I am not sure what the "G" before the number or the "A" or "B" after the number mean. I have checked, and the number (007, 010, 011, 022, 025, 904) all seem to be the correct size O-Rings.
For the Sherwood Valve, the numbers are G014L and G214A.
These are Sherwood numbers. I suspect that the "G" might indicate the material (Nitrile, Vinton, Silicon, EDPM) but I am not sure. And even if it does, I'm not sure which material I want?
I can't find a correlation for the "A" and "B" and "L". The only "B" O-ring is the inlet end of hose low pressure port plug. But there are other O-rings in the low pressure side (2nd stage) that are "A".
I am looking to order a supply from the link in post number #3, but need to know the material(s) and duromenter(s). Right now, I'm not O2 cleaning for OCA, but if the OCA parts are not much more, I'll just stock them in case I decide to use OCA in the future. Right now, I plan on using CB Nitrox with I get my compressor, or just using Grade "E" air.