The copper crush washer goes under the large bolt near the pulley shaft.

the small diameter rubber ring goes inside the pressure relieve mechanism
held within that compartment.

the blue radial sealing ring is for the front pulley shaft. The pulley may
have to be pulled off with a pulley puller.

the large diameter rubber rings go into the rear of the unit, that recessed
cover you can see is secured in place with a snap ring. once you remove it,
it will come out, there is spring pressure behind it.

When inserting any lip seals, you may want to liberally coat them with
petroleum jelly, as well as the surface they are mating to. if you don't,
and they nick even slightly, the whole exercise will be a waste of time
because it will still leak.