Paul

Just bought the material for the couplings, enough
to make 80...I never saw anything on the o-rings.

do you have that info so I can get them here???

jeff

http://www.pspglobal.com/nf000series.html

I would go with the Teflon encapsulated  Creavey .070 section size.
http://www.creavey.com/

Tell Jeff Chrysler they are for rotaries.
He does all our end housing water O-rings. Best in the world.
Hollow Core Elastomer are the latests and greatest if possible
in the size we need.

Others will work too.

Paul Lamar