Power steering pump o-rings

I received a new pump today & it came with two o-rings. One for the reservoir where it goes into the pump & the other????

I looked at the old pump, as well as diagrams however can’t really see where another one would go.

3.4

Any idea?

 

An Extra one got tossed in during packing .

Pump also might be used in a Application that needs two O rings for installation.

Unless the Reservoir has two O rings one on top and one on the bottom .

Where the pressure line attaches on the pump side it is easy to see if the pump is machined for the o ring.

You have the pump in front of you.

Better Luck with this one!!!