So I made the spanner wrench, pulled it apart, cleaned out the old washer seal. As for the washer, Binder mentions a seal material but provides no info on what exactly it was or its size. I currently have a bicycle tube, lots of pen sacs, and 1/16 and 1/32 inch thick neoprene rubber. Would any of these work?
As fo the size, Binder suggests a 2mm hole in the center (I have a punch for that). But does not mention and OD. I think measuring from the threaded id of the barrel it is about 6.8mm. The seal nipple OD is about 6.7mm. I cannot measure it but in the barrel just below the threads, near the small center hole, it is about 7mm. What is a good OD for the seal?
BTW I tried a seal at 6.7mm. Seems to be a tight fit (soapy water check while blowing into the barrel). I also notice that if you tighten the spanner fitting, too much, you can squeeze that washer seal hole closed. Then if you squeeze the bulb.... it stays squeezed!
Edited by uilleann, 10 October 2019 - 17:03.