Dear Mr. Rehan,
i also have 1998 corolla with leaking steering . I have talked with 2 mechanics (owners ) and they say that changing seals will not help as it will again leak in 1-2 months at most . so best bet is to replace the steering system with a kabli one and again the risk remains.
So i am just topping the power steering fluid and i check it once a week for topping.
I am not ready to replace the steering with a kabli one