Oil Seal and O-ring Assembly Note

WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.

Press the oil seal until it is flush with the edge of the rack bushing as shown.
Install the O-ring into the rack bushing.

Fig 1: Pressing Oil Seal Until It Is Flush With Edge Of Rack Bushing
Courtesy of MAZDA MOTORS CORP.