Hello,
I just receiver my Lamar Couplings today (AKA  "Wiggins") and they are
beautiful little gadgets.  My wife was making fun of me because I kept
getting them out and looking at them.  I just have one question.  That
O-ring were they designed to take?
Thanks,
Don Mitchell

I got a package of 100 of them right here. It says 70 EPR size 029.
I think these are Ethylene Propylene.
Paul Lamar

Paul,
I looked up the coupler O-ring on the McMaster website.  They show that the
part # should be    9557K66  for the Ethylene Propylene (EPDM) O-Rings but
the part # doesn't show up in the price list.  They also show a NSF-Approved
Ethylene Propylene (EPDM) O-Rings but the 029 size isn't listed in the
catalog.  The second one seemed like the correct part but I'll have to call
them to find out if they carry them.  I'll let you know what I find out.

Don Mitchell

They sell sizes they don't list in the catalog. I think you need to call 
them Don, I got my 70 029 EPR from them.

Paul Lamar
 
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