Look at the illustration. The flat sides of the two seals need to face each other or be back to back.I hate to Be a pain in the ass but which side of the seal is the outer. If the flat side is the outer than the dust seal is in backwards?
The lip on the inner seal needs to be pressed tighter against the shaft as the pressure increases.
The lip on the outer seal needs to press tighter when someone directs a hose or pressure washer at the pitman arm area.
If not clear ask more questions
Dave