Rusty's site has 2 kinds of o-rings listed, one of them tools like
what I
call an o-ring the other looks wore like a flat 'rubber' washer. They
are
both listed for use with the R4 compressor the difference being
'stepped
ports?'. What up with this?
My guess is that they changed the way the manifold attaches at some
point, and it may be the only way to know which style you need is
to look. Perhaps you just have to order both sets and eat the
wrong ones? Be silly to return something that small I'd think.
-- Jim
