Are you talking about a rubber cover for a bleader valve?
I changed my slave cylinder a long time ago and can't remember what
you
might be talking about.  No air should be going in and out.  Only brake
fluid.
What was the super black fluid?

>>> Joseph Fortino <fortinoj@SPEAKEASY.NET> 6/24/2003 10:38:25 AM >>>
Hello all

looks like my slave cly was missing the rubber end cap on the top
is this standard? I put one on to just keep maybe any air tring to get
out
somehow, the slave is in good shape not leaking the screw was a bit
loose
at first. wow i was able to get all the super black fuild out.

Thanks
Joe