Teflon tape

Dave is correct about teflon tape and hydraulic systems. On critical systems such tape is outright prohibited because of the potential of pieces getting into the system.

I may not understand your problem correctly. I take it that the leakage is NOT past a threaded connection such as pipe threads but rather past a brass ferrule on a piece of steel tubing? I am not sure what a "square type" ferrule is even...something special the Brits use?

However, my experience with ferrule type fitting connections has been rather poor. They tend to leak due to overtightening and crushing the ferrule...something that always happens to me with my "heavy hand".

If that is the case, and it is possible, clearance and equipment wise, I recommend you investigate changing out the connection from a ferrule style to an SAE 45 deg flare style. They work must better for me in sealing that type of power steering connection.

Rod

Teflon tape comes in various thicknesses. Talk to your plumbing supply and see if they have it or can get you some.

What you want is called, Leak Loc, a blue high pressure thread sealer good to 500 degrees and 10000psi. Be warned that it will be very difficult to get the joint apart after using the sealer.

Most refrigeration supply companys stock it, WW Grainger, Johnstone Supply.

T_Bone

• Leak Lock