D9R and 463 pull scraper

[dirtpusher9]

Hey Ken, The o-rings are already sized, by that I mean that if you needed an o-ring for a 5/16'' shaft, it is made with the right tolerances that it needs to do the job. When I cut an o-ring grove I use the same tolerances.

The end cap and the large end are soldered, yes.

When do we get to see what you are building, Ken? It's been a long time.

[tc1cat]

Joe, I think what Ken wants to know is- if you use an O ring for a .5" diameter cylinder, what diameter groove do you put in the piston? Do you just measure the O ring thickness and make the groove that dimension smaller than the cylinder? Or is there some sort of chart or rule of thumb that you go by when making the piston grooves?

Lynn