Steering rack rebuild help needed

[Jeff Hemmerlin]

Hi,  I am rebuilding the steering rack on my 95 S6 and I am trying to remove the seal assembly that separates the hydraulic piston portion of the rack from the mechanical portion of the rack and pinion.  Does anyone know how this seal is removed from the tube?  or Does anyone know of a shop that rebuilds the racks and might be able to tell me.  

Thank you,

Jeff Hemmerlin
95 S6