GT6 master cylinder

[cak@dimebank.com (Chris Kantarjiev)]

I have yet to receive the O ring to seal the rear of the reservoir. The
first time I rebuilt one of these cylinders I didn't realize
that the part was missing and tried to seal the inevitable leak with
RTV .. now I use a couple of standard O rings of the proper diameter, stacked,
if I can't come up with a proper thick ring. Works great.