My brand-new Ahab did what I have been reading about: the outer O-ring either came broken or broke as soon as I screwed the top back on the pen. I replace it with a ¼ inch ring (3/8x1/4x1/16) which fit in place, but was too thick for the top to screw back on the body.
In looking at the pen, it seems to me that this outer O-ring, the one that goes around the top of the wider section of body threads, is really unnecessary unless you use this pen as an eyedropper. I'm going to use the piston fill, so I wonder: do I really need that o-ring at all?
If I do, does anyone know what size I need? Even the supplier seems to carry only the ring for inside the piston, and does not know the size of the outer ring. Calling the number on the Noodler's web site always gets an answering machine.
While we are on the topic, is there a significant difference between 90% and 100% silicon grease?
Thanks so much for your help.